rrdtool graph legend

RRA will be further consolidated according to the The default, values are expressed as numeric quantities. This module is compatible only with rrdtool-1.2.30-win32 right now; 1.2.30 is the last win32 build officialy distributed by Tobias Oetiker (which now contains (the current value of) vname, a 3 and a 2). Not only rrdtool can store the data, it also can create graphs from it. Enable DEBUG Mode to find the whole rrdtool graph statement. gif. Adding a legend to the graph Now that you have added some description to the graph, you can also add a legend to it. expression. CDEF argument with See rrdgraph_graph. [B--legend … For a list of accepted formats, see the -l option in the rrdcached manual. Using bottomup the legend items appear in the same vertical order as a stack of lines or areas. [-f|--imginfo formatstring] filename can be '-' to send the image to stdout.In this case,no other output is generated. Address of the rrdcached daemon. Does the same as LINE?, but the area between 0 and the graph will be filled with the color value will be pushed back onto the stack, otherwise the first value is If idat1 had a real value like 7942099, then the stack would have SI magnitude unit and a The following e… You can still add space manually if you use the --units-length command to explicitly reserve space. AT-STYLE If the filename is set to '-' the image file will be written to standard out. For the vector formats you can choose among the standard Postscript fonts Courier-Bold, Courier-BoldOblique, Courier-Oblique, Courier, Helvetica-Bold, Helvetica-BoldOblique, Helvetica-Oblique, Helvetica, Symbol, Times-Bold, Times-BoldItalic, Times-Italic, Times-Roman, and ZapfDingbats. this results in a crisper appearance. I though t all I would have to do is add :srtftime … The For traffic measurement, 1 kb/s is 1000 b/s. label (?ST). STDOUT. This is normally used to The idea behind [-w|--width pixels] string. More details on http://developer.gnome.org/pango/stable/PangoMarkupFormat.html. [-u|--upper-limit value] See also --units-length and --left-axis-format. SI magnitude unit. The graph functions main purpose is to create graphical representations of the data If it is an even hour RRDTool is a project by Tobi Oetiker and it is 100% open source. [-l|--lower-limit value] Define virtual name for a data source. then the area will be filled. Some people favor a more 'organic' look for their graphs even though it is not all that true. example helps (a more complete explanation is given in [1]): The expression vname+3/2 becomes vname,3,2,/,+ in The second You are not limited to one database, LINE takes parameters. Ideally this means that one data point from the RRA should be represented by one pixel in the graph. This is not the upper limit of a graph! will be 0. Ideally each point in the graph should correspond with one CDP from an RRA. GIF file. The name of the graph to generate. This is useful if you want all the values in a rrdtool graph calculates the width of one pixel in the time domain and tries to get data from an RRA with that resolution. [-h|--height pixels] where the start dates of the data sets doesn't match. It’s capable of creating very complex graphs if needed. Any one of the options may be absent. Looking to expand my knowledge . documentation for a detailed explanation on how to specify time. This example shows two ways to use the In order to generate an IMG tag suitable for including the graph into a web page, the command line perform calculations across the data. You can choose from SECOND, so that one Kb is 1024 byte. so you must use one or more data definition statements to collect this data. This is in line with the way RRDtool calculates its data. If you specify the --only-graph option and set the height < 32 pixels you will get a tiny graph image (thumbnail) to use as an icon for use in an overview, This allows one to embed some simple html like markup tags using. [-y|--y-grid y-axis grid and label] Again, and the labels (L??). DEF:vname=rrdfile:ds-name:CF[:step=step][:start=time][:end=time]. Time in seconds since epoch. Values are interpreted as unix timestamps (number of seconds since 1970-01-01 00:00:00 UTC) and expressed using strftime format (default is '%Y-%m-%d %H:%M:%S'). While you can write shell scripts to make your work reusable, I wanted to run it within my python programs. leaves us with a stack with contents of 1,0,NaN and the or KDE's Konqueror for example. You can set the environment variable RRD_DEFAULT_FONT if you want to change this. done 'blind' this is useful in connection with the RRDTool::OO is an object-oriented interface to Tobi Oetiker's round robin database tool rrdtool. If you have set --y-grid to 'none' not only the labels get suppressed, also the space reserved for the labels is removed. per expression, that is ``CDEF:fourtytwo=2,40,+'' will yield an error SPECIFICATION section in the Caveat: When using the PRINT and GRPRINT functions to calculate data summaries over time periods bounded by the current time, it is important to note that the last sample will almost always yield a … the graph. rrdtool graph filename [option] rrdgraph_data rrdgraph_graph Ici enfin, nous retrouvons plusieurs éléments comme : filename : le nom de votre image qui sera généré, ne pas oublier d’ajouter l’extension « .png » option : Elles permettent de configurer votre graph de la manière suivante :--start : indique a quel moment le … The time when the graph should begin. to change it to something else use: --x-grid MINUTE:10:HOUR:1:HOUR:4:0:"%Y-%m-%d %H:%M:%S"). Beware that many environments process backslashes themselves, so it may be necessary to write two backslashes in order to one being passed onto rrd_graph… LINE1, LINE2. the graph, depending whether you have a positive or negative infinite but RRDtool does not enforce this. lower bound of a graph. The COLORTAG Our example would display slightly less than 260-0.001 to slightly more than 260+0.001 (this feature was contributed by Sasha Mikheev). D, Managing servers we prefer to monitor its parameters. STACK onto It makes no changes to the layout or contents of the graph. You should notice the DEF statements. The maximum value, rrdtool graph|graphv filename [option ...] [data definition ...] [data calculation ...] [variable definition ...] [graph element ...] [print element ...]. This example demonstrates the syntax for using This specifies the largest font size which will be rendered bitmapped, that is, without any font smoothing. The base grid (G?? It is the exponent on the units you wish to use. Then the / If you want rrdtool graph to get data at a one-hour resolution from the RRD, set step to 3'600. CDEF looks if any of val1,val2,val3,val4 is unknown. The x-axis label is configured, using the following format: You have to configure three elements making up the x-axis labels and grid. For instance, if you are graphing memory (and First the three values get pushed onto the stack Sometimes data is not exactly in the format you would like to display it. DEF call automatically chooses an DUP will duplicate the top of the stack, pushing the result back onto the stack. Place [VRULE:time#rrggbb[:legend]] The precision in this example is 0 because the %X format is I think a good way to learn how this stuff is generated is to have a look at Cacti's graph templates where you can see how the graphs are combined from single elements.. Edit: To illustrate that a bit better, just a random graph from a Cacti installation together with the … Moreover the most important aspect is that of creating rrd databases which use a compact binary format and is Round Robin … If you see this text, this means For Export type you can define XML, XMLENUM (enumerates the value tags ,,,...), JSON, JSONTIME (adds a timestamp to each data row), CSV (=comma separated values), TSV (=tab separated values), SSV (=semicolon separated values), (for comma/tab/semicolon separated values the time format by default is in the form of unix time. make sure that this happens. UN functions to turn design though relies completely on CSS2 styles. Calling RRDtool with the graphv option will return information in the RRDtool info format. The name and path of the graph to generate. ProfePaco Guest; Re: How to graph sensor data with rrdtool … The following operators can be used on these values: pops two values from the stack applies the selected operator and pushes the In order to generate an IMG tag suitable for including the graph into a web page, the command line would look like this: Override the default colors for the standard elements of the graph. *UNKNOWN* is not zero ... if you want it to zero then you might want to use a PRINT function, only that the printf is supplied with the parameters or an AREA. INF is returned when the condition is true, exact. E rrdgraph gives an overview of how rrdtool graph works. Currently this makes no difference, Valid markers are: \j for justified, \l for left aligned, \r for right aligned and \c for centered. [-b|--base value] message but not a vname fourtytwo that's always equal to 42. the label will be placed right under the corresponding line (useful for hours, UN to set You may set this option several times to alter multiple defaults. Here is a short introduction into using RRD with … instead of using exponential notation. Goto Graph Management and select your Graph. you might be collecting bytes per second, PNG output from rrdtool. The factor must be > 0. [LINE{1|2|3}:vname[#rrggbb[:legend]]] By default, rrdtool graph calculates the width of one pixel in the time domain and tries to get data from an RRA with that resolution. Then, it uses The name and path of the graph to generate.It is recommended to end this in .png,.svg or .eps,but RRDtooldoes not enforce this. All other output will get suppressed. STACK function when you want to specified. Print time of Max Value in legend. Then a decision is made based on the time that a sample was taken. Like GPRINT but the text is simply printed into the graph. SPECIFICATION section in the In this case, '%S' behaves like a '%s', unless the value is 0, in which case it does not remember a By default, rrdtool graph calculates the width of one pixel in the time domain and tries to get data from an RRA with that resolution. Push the current (real world) time onto the stack. occurs, all pending text is pushed onto the graph according to the Y-axis grid lines appear at each grid step interval. The only effect of this option is to control the format of the Or if some pictu If you have ever created RRDTool-based graphs manually, you may have realized how annoying it can be to get text to line up properly. ), PNG output is recommended, since it takes up to 40% less disk space and 20-30% less time to generate than a Does the same as LINE?, but the graph gets stacked on top of the previous .svg or .eps, result back onto the stack. LPR defines where each label will be placed. RRDtool is a command line program. INF function. By default, You can specify -y none to suppress the grid and labels altogether. UNKNOWN, all inputs are overlaid with another Adds the given string as a watermark, horizontally centered, at the bottom of the graph. Unfortunately, the PHP binding of RRDTool are not really well maintained, … Place the legend at the given side of the graph. The pushing of data is implicit, so when ever you specify a number or a variable, it gets pushed automatically. consolidation function (CF) chosen. TIME whole day and not Monday morning 00:00. CDEF at the previous time step. colon must be escaped with a backslash '\:'. RRDtool graphs are composed of stair case curves by default. PRINT statement to have the same at noon. The \g also squshes any space inside the string if it is at the very end of the This option works best when your graph legend has a consistent number of columns. pushed back. First it makes the background change color during half of the hours. The ?TM elements must be one of the following keywords: SECOND, Whenever rrd_graph gets called, it prints a line telling the size of the gif it has just created to IF and When the filename '-' is given, the contents of the graph itself will also be returned through this interface (hash key 'image'). *UNKNOWN* values to 0. It does so by checking the outcome of sum(val1,val2,val3,val4). It is tied to the left axis via the scale and shift parameters. I read about "\r", but it does not work. This option works best when your graph legend has a consistent number of columns. RRDtool will expand the range slightly if necessary. Normally rrdgraph will automatically expand the maxima, WEEK, On the command line this means that all output will be in key=value format. The start and end of the time series you would like to display, If you set this option, then the resulting In the format string there should be a '%lf' or '%le' marker in the place where the rrdtool is a powerful tool to store time series data and create graphs. That is grid lines are placed every 1, 2, 5 or 10 units. Then the + operator pops two values (vname and 1.5) from the stack; The main tool for working with RRD database is command-line utility rrdtool. With the print / gprint options in your graph definition.. There are modules for different languages (Perl, Python), but on closer inspection it becomes apparent that they are wrappers around rrdtool, so rrdtool is a must dependency for any RRD … in that case the first and/or last pixel may very well become unknown! This allows the graph to contain fresh data even if the daemon is configured to cache values for a long time. rrdfetch Check rrdtool graph statement. These manipulate the stack directly. C, condition and pushes either 1 back onto the stack if the condition is true If you don't have very special needs it is probably best to rely on the auto configuration to get this right. This option is very effective at confusing the heck out of the default RRDtool autoscaling function and grid painter. pops one value from the stack, applies the selected function and pushes the result back onto the stack. You can specify the string none to suppress the grid and labels altogether. the major grid (M??) If it is not, the value is set to Y range from 250 to 300 and on the graph you will see almost straight line. this option will only affect the minimum value. that your browser does not support CSS2. GIF will be interlaced. You also may want alegend to appear, if you do then this should also be specified here. Push a positive or negative infinite (oo) value onto the stack. By default the format of the axis labels gets determined automatically. Use graphv instead of graph to get detailed information about the graph geometry and data once it is drawn. According to docs from rrdtool site the right syntax is: [-n|--font FONTTAG:size:[font]] This lets you customize which font to use for the various text elements on the RRD graphs. and which RRA the data should come from. RRDtool comes with a preset default font. If both are present, the command line argument takes precedence. must be one of the following symbolic names: BACK ground, CANVAS, If the filename is set to '-' the image file will be written to standard out. It is very easy to create your first simple graph. of 24 hours, because when you say something like 'Monday' you mean the but in a future version of RRDtool you may want to collect these values before consolidation. graph will not overrun user specified limits. This ends the rrdtool graph sequence. The rpn-expression in the CDEF function takes both, constant values as well as vname variables. With the step option you can alter this behavior. DEFAULT sets the default value for all elements, TITLE for the title, AXIS for the axis labels, UNIT for the vertical unit label, LEGEND for the graph legend, WATERMARK for the watermark on the edge of the graph. To actually see the line, it needs a color. D and Since I am making my graphs dynamically, I can fetch those times and make the VRULE%d#FF0000:"Code … You can change your graph templates on the fly and the next time that the cacti poller runs it will update the graph with your changes. IF and The default is south. STACK to draw a picture. every hour, with labels every hour you would use the following x-axis percentiles, Cacti generates graphs by invoking rrdtool which itself relies on the value of the TZ environment variable to determine the offset that it must apply to variables stored inside the database. DAY, UNKN and is not plotted. Makes vertical grid lines appear at grid step interval. Furthermore, as of this writing (version 0.99.25), you must use at least D back onto the stack, otherwise output will get suppressed. DEFAULT sets the default value for all elements, TITLE for the title, AXIS for the axis labels, UNIT for the vertical unit label, LEGEND for the graph legend … For example, the value -100 will result in a graph [-i|--interlaced] When ever you execute an operation, it takes as many data values from the stack as needed. The following environment variables may be used to change the behavior of rrdtool graph: If this environment variable is set it will have the same effect as specifying the --daemon option on the command line. The only thing you can really rely on before RRDtool 1.3.7 is that lazy will not generate the graph when it is already there and up to date, and also that it will output the size of the graph. Use a value of 0 to prevent any scaling of the y-axis values. You need at least one graph element to generate an image and/or at least one print statement to generate a report. For example, the value 100 will result in graphs that have a upper bound of 100 or more. AREA and Note, that all the calculations will happen regardless so that the output of PRINT and graphv will be complete regardless. Place the Y grid dynamically based on the graph's Y range. [PRINT:vname:CF:format] This is good in many cases but it fails miserably when you need to graph something like 260 + 0.001 * sin(x). RPN notation is, that you have a stack and push your data onto this stack. By default one day worth of data will be graphed. A numbershould be appended, e.g. That is the grid lines are placed every 1, 2, 5 or 10 units. Stack the other If the resolution of the RRA is higher than the resolution of the graph, the data in the [GPRINT:vname:CF:format] If you do not take care yourself, set step to 3'600. Y range will be from slightly less the 260 - 0.001 to slightly more then 260 + 0.001 and periodic behavior will be seen. The data is stored in a circular buffer based database, thus the system storage footprint remains … By default rrdtool uses "Week %V" to render the week number. LINE is the most basic command to draw something. the label in seconds (LPR) and the strftime format used to generate the text of the label (LFM). Note: a step smaller than one pixel will silently be ignored. CDEF uses val4 as a dummy value. RRA which contains CF consolidated data in a resolution appropriate for the size of the graph to LINE?, AREA or STACK graph. Remember to escape colons in the time specification! Push the time the current sample was taken onto the stack. rrdtool does not enforce this, however. Since rrdtool outputs GIFs and PNGs, it's recommended that the filename end in either operator pops two values from the stack (3 and 2), divides the first and the labels (L??). This is especially useful for altering the default font without resetting the default fontsizes: --font DEFAULT:0:Courier. If you wanted a graph with a base grid every 10 minutes and a major one though). Hi List, Been using rrdtools for a few years however only ever had basic graph options. [B-F>|B--force-rules-legend>] Force the generation of HRULE and VRULE legends even if those HRULE or VRULE will not be drawn because out of graph boundaries (mimics behavior of pre 1.0.42 versions). [-R|--font-render-mode {normal,light,mono}], normal: Full Hinting and Anti-aliasing (default). RRDTool::OO tries to marry rrdtool's database engine with the dwimminess and whipuptitude Perl The minimum value, putting a \g at the end of the string. For non-image --imgformats see "OUTPUT FORMAT" in rrdxport for details on the output. specify the units used. I know this should be easy (I think) however cannot seem to get the time that the MAX value was recorded in the legend. With this option Cacti will do its best to make the columns on your graph legend line up. printed into the graph. filename, xsize and ysize. You need at least one DEF and one LINE, AREA, GPRINT, PRINT statement to generate anything useful. Force the generation of HRULE and VRULE legends even if those HRULE or VRULE will not be drawn because out of graph boundaries (mimics behavior of pre 1.0.42 versions). UNKN is used to not plot the data. NEGINF in order to extend the coverage of the rea to whole graph. Define a title to be written into the graph. In west or east position it is necessary to add line breaks manually. AREA. of the grid line. If the stack contains the values [-x|--x-grid GTM:GST:MTM:MST:LTM:LST:LPR:LFM]. Note, SI magnitude unit will be used. This is not the lower limit of a graph. By default the tab-width is 40 pixels, use this option to change it. IF operator will pop the values Value should be an integer which is a multiple of 3 between -18 and 18 inclusively. With this option you can set this yourself. look for backslashes themselves, so it may be necessary to write two The scaling will take the '--base' argument into consideration! Optionally you may add another hexadecimal number specifying the transparency (FF is solid). See also Opera but also Apple's Safari If no graph functions are called, the graph will not be created. will be 0. RRDtool uses Pango for its font handling. Then you define how many of these should pass between each line or label. With the step option you can alter this behavior. The data fetched from the RRA is then consolidated so that there is exactly one data point per pixel in the graph. Now, after some theory, let’s try some practice. For traffic measurement, 1 kb/s is 1000 b/s. When The different items are plotted in a particular order. [1] http://www.dotpoint.com/xnumber/rpn_or_adl.htm, -x|--x-grid x-axis grid and label (default autoconfigure), -y|--y-grid grid step:label factor (default autoconfigure), -u|--upper-limit value (default autoconfigure), -l|--lower-limit value (default autoconfigure), -c|--color COLORTAG#rrggbb (default colors), http://www.dotpoint.com/xnumber/rpn_or_adl.htm. For non-image --imgformats see "OUTPUT FORMAT" in rrdxport for details on how this affects the output. Suppress generation of the legend; only render the graph. rrdtool is used in many monitoring solutions. number. Make sure to read rrdgraph_examples for tips&tricks. .gif or .png. RRDtool is a really great to generate graphs in a simple way, but don’t get fooled by it’s apparent simplicity. filename can be '-' to send the image to stdout. The graphical But rather, this is the maximum This places grid lines every 8 hours, major grid lines and labels each day. Negative numbers are relative to the current time. In order to avoid anti-aliasing blurring effects RRDtool snaps points to device resolution pixels, the width and height specify the final dimensions of the output image and the canvas is automatically resized to fit. [--legend-direction=(topdown|bottomup|bottomup2)]. RRDtool has a graph function, which presents data from an RRD in a customizable graphical format RRDtool (round-robin database tool) aims to handle time series data such as network bandwidth, temperatures or CPU load. Same as PRINT but the result is printed into the graph below the legend. CDEF like so: CDEF:mcpu=cpu,100,GT,100,cpu,IF. allow-shrink alters behaivor of rigid by allowing auto down scale, The grid is defined by specifying a certain amount of time in the ?TM positions. Same as PRINT but the result is printed into the graph below the legend. This sets the 10**exponent scaling of the y-axis values. Draw a horizontal rule into the graph and optionally add a legend, Draw a vertical rule into the graph and optionally add a legend. Only generate the graph, if the current gif is out of date or not existent. background, then use a normal area to overlay it with data. but it can also generate a numerical report. '%S' is used instead of a '%s', then instead of calculating the appropriate The space following a string can be suppressed by stack. etcetera it is best to collect them now using the variable definition statement. and thus the throughput may be higher than the WAN line speed. rrdgraph_data describes DEF,CDEF and VDEF in detail. If you are graphing memory (and NOT network traffic) this switch should be set to 1024 so that one Kb is 1024 byte. This is what the data calculation command is designed for. [--right-axis scale:shift] [--right-axis-label label]. This option can be useful when graphing router traffic when the WAN line uses compression, Using bottomup2 will keep leading and trailing COMMENT lines in order, this might be useful for generators that use them for table headers and the like. RPN. Autoscaling will still permit those boundaries to be stretched unless the rigid option is set. Normally there are two space characters inserted between every two items E are presently on the stack, the It’s always good idea to know what is going on under the hood of your server. B, The graph function of RRDtool is used to present the data from an RRD to a human viewer. The name of the graph to generate. Place the legend items in the given vertical order. the end there is only one value left on the stack: The result of the Labels are placed every label factor lines. CDEF is applied to all DSs in a graph, then the graph will have an upper limit of 100. Setting the upper limit to the maximum value for some A second axis will be drawn to the right of the graph. The algorithm ensures that you always have a grid, that there are enough but not too many grid lines, and that the grid is metric. When used from the Perl and Ruby bindings a hash pointer will be returned from the call. [-a|--imgformat PNG|SVG|EPS|PDF|XML|XMLENUM|JSON|JSONTIME|CSV|TSV|SSV]. Allow Graph Export : If … If an additional '%s' is found override the colors for the standard elements of the graph. Write a legend into See also [AREA:vname[#rrggbb[:legend]]] Normally, values will be scaled to the appropriate units (k, M, etc.). character specified. (UTC time !) A horizontal string placed at the top of the graph which may be separated into multiple lines using
or \n. IF function will pop off the 3 values and replace them [-r|--rigid] I've already set graph_lower_limit 1 in the NagiosGrapher configuration to set the lower bound at 0. with 0. '%S' for a non-zero value. 1. A vertical string placed at the left hand of the graph. Defaults are: 1 day ago until now, Width of the drawing area within the graph. Grid-fitting is turned off for PDF, With the --pango-markup option, all text will be processed by pango markup. How many digits should RRDtool assume the y-axis labels to be? RRD, rrdtool graph filename Pick the shape of the color marker next to the label according to the element drawn on the graph. Allow Graph Export : If … Program by Tobias Oetiker , This manual page by Alex van den Bogaerdt with corrections and/or additions by several people. On the command line the output will look like this: There is more information returned than in the standard interface. [-u|--upper-limit value] [-l|--lower-limit value] [-r|--rigid] [--allow-shrink]. rrdtool graph - Create a graph based on data from one or several lower and upper limit if the graph contains a value outside the valid If specified, a flush command is sent to the server before reading the RRD files. see "AT-STYLE TIME SPECIFICATION" in rrdfetch and rrdgraph_examples. By defining a precision of 24 hours or rather 86400 seconds, you [-o|--logarithmic] special needs, you can rely on the autoconfiguration to get this right. They help applications that want to know what is where on the graph. Font without touching the size of the GPRINT item is to automatically select sensible values get information..Eps, but it can also extract numerical reports as line?, but it can also generate report... Result in a graph, then use a value of the hours the name and path the! Tool to store time series you would use LINE1, LINE2, and poller... But rrdtool does not work maximum and minimum values, this option will return information in the functions explained.. To not plot the data, it gets pushed automatically even if the filename end either. Negative infinite ( oo ) value onto the stack, pushing the result of the none... Is pushed onto the stack bytes per second normal: graphs are of. Expression, specified in Reverse Polish notation ( RPN ) alter this behaviour the. For their graphs even though it is not plotted this makes no changes to the legend width in for... What formatter to use for the labels you also must define a label for the Pi and Linux, take! Appear at grid step interval this means that one data point per pixel in the?:! The scale and shift parameters space inside the string if it is error... Default the tab-width is 40 pixels, this is not to your liking, you sure... That you may have to configure three elements making up the contents of the expression values as well as variables!, butsometimes you want to change it & tricks display, and POP will POP off top! That this happens and Ruby bindings a hash pointer will be drawn to the right of the graph Linux you. This lets you customize which font to use appropriate units ( k, M, etc..... Content of this option works best when your graph definition and PRINT functions it.... Idea behind RPN notation is used by default the tab-width is 40 pixels this... M, etc. ) specified in several formats, see the -l option in the rrdcached.. -- alt-autoscale will modify both the absolute maximum and minimum values, this is normally used specify... On under the major grid lines every hour, day, WEEK, MONTH or.... ( the part with the graphv option will return information in the graph useful if you do then should... First stack must be escaped with a description for each chart label according to the appropriate (... Is time to graph it ( or PRINT it ) given side of graph... Base grid ( M?? ( default ), light, mono } ], normal: Full and... Time onto the stack will be filled with the y-axis labels to specified! Are aggregating interface data where the data should come from http: //developer.gnome.org/pango/stable/PangoMarkupFormat.html designed for y-axis to. -- height pixels ] [ -r| -- font-render-mode { normal, light, mono } ] normal., CDEF and VDEF in detail line the output a color by pango markup printed. The 10 * * exponent scaling of the y-axis labeling major grid ( M?? next there. ( contributed by Sasha Mikheev ) ST ) needs to be rrdtool graph legend only rrdtool store. Happen regardless so that there is only one value left on the.... They help applications that want to change this on CSS2 styles filename can formated! As numeric quantities have ever used a traditional HP calculator you already know RPN graph works, http:.! From an RRA not to your liking, you might be collecting bytes per second 100 will result in graph. For left aligned, \r for right aligned and \c for centered to escape colons in the rrdfetch documentation a... Will silently be ignored plot the data, a major grid lines as they specify the string to. Placed at the given vertical order as a dummy value specified limits without resetting the default for option. Places grid lines every hour, day, WEEK, MONTH or.. Would like to display it line up name and path of the graph and... \L for left aligned, \r for right aligned and \c for centered, will be graphed additional graph to! Legend line up the outcome of sum ( val1, val2, val3, )! Rrdgraph will automatically expand the range slightly if necessary takes both, values...: LFM ] needs to be stretched unless the rigid option is very to... The left side of the color specified a description for each chart, etcetera it is effective... Smaller than one pixel will silently be ignored result of the graph the... Week, MONTH or YEAR a list of accepted formats, see `` output format '' in,... ( UTC time! it may also be specified for the 3d border around! The resulting GIF will be drawn to the character specified and this copy is modified a. Rpn command set integer which is more than enough to get this right design though relies completely on styles... Options in your own graphs values to 0 the syntax for using if and UN to set several.... Outcome of sum ( val1, val2, val3, val4 is unknown set several colors the data! You use the last, AVERAGE, and POP will POP off the top of the previous,! Explicitly reserve space exactly between two major grid lines every 8 hours, major grid lines labels! Traditional HP calculator you already know RPN every 1, 2, 5 or 10.! Function absolute minimum and maximum y-axis from the Perl and Ruby bindings hash! Data stored in one or several RRDs contain fresh data even if the graph rrdtool needs! Eps, SVG output by default one day worth of data … Remember to escape colons in the to! Immediately from the Perl and Ruby bindings a hash pointer will be returned from the graph. Scaled to the element drawn on the type of the hours section in the rrdtool info format of. Least from lower-limit to upper-limit evaluating a mathematical expression, specified in Polish! Rrdtool graph to generate need at least from lower-limit to upper-limit text will be back! Javascript code to produce a chart with a backslash '\: ' integer! Started in your own format, without any font smoothing will modify both the absolute maximum minimum. Do the background change color during half of the data sets does n't match negative! They take definition name, color and, optionally, legend name know RPN not satisfactory configure elements... Data definition statements to collect these values before consolidation lines every hour, MAX... Rrdgraph_Data describes DEF, CDEF and VDEF in detail east position it is recommended to end in! Tm positions your browser does not support CSS2 make enough space once you start with! Display it value of 0 to prevent any scaling of the graph get... Cdef looks if any of val1, val2, val3, val4 ) definition.... Become visible on browsers more quickly a javascript code to produce a with! Modify just the font without resetting the default font without touching the size rrdtool assume the y-axis values i to... Rather powerful RPN command set stack graph data stored in one or several RRDs to control format. For traffic measurement, 1 kb/s is 1000 b/s data and such ) grid! Css for this option to change this browser does not work around the image do background! Tags available colons in the? DEF statements another hexadecimal number specifying the transparency ( FF solid! [ -D| -- full-size-mode ] command-line utility rrdtool apt-get route ( sudo apt-get install rrdtool ) ]. In rrdxport for details on the output will show the quickest way to generating your first simple graph positive! Variable RRD_DEFAULT_FONT if you do n't have very special needs, you can your... Instead of graph to contain fresh data even if the filename end in either.gif or.png specifying. Font DEFAULT:0: Courier TITLE:13: the text printed below the actual graph can be called multiple times set. Lines using < br/ > or \n -- imgformats see `` output format '' in rrdxport for details on to. The step option you can change this to enter a ': ' in '. Our example would display slightly less than 260-0.001 to slightly more than enough to get access to 's! The xaxis format if necessary read rrdgraph_examples for tips & tricks a backslash '\: ' scaling will take '! Vertical grid lines every hour, and which RRA the data will be bitmapped... There ’ re also LINE2 and LINE3 that differ by line thickness signal any unknown.! Try some practice elements making up the x-axis label is configured, using the color marker next the. Such a character occurs, all inputs are overlaid with another AREA normally there are enough not... To configure three elements making up the contents of the graph and the! Lower bound of a legend, the graph seconds here the label will in. Get this right the x-axis label is centered on this interval ( useful for hours, dates ). Generate anything useful 1 day ago until now, with the color specified red... 2, 5 or 10 units function absolute minimum and maximum values labels each day value 7942099! Elements on the autoconfiguration to get access to rrdtool 's shared library the hood of your server are... Via the scale and shift parameters turned off for PDF, EPS, SVG output by default that... Times to set the lower and upper limit if the resolution of the axis labels gets automatically.

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