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[Solved] TimeSeries support?
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zigzag
pChart user
Joined: Wed Jan 04, 2012 10:02 pm
Posts: 5
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 [Solved] TimeSeries support? [Sorry for my bad english] Hello, thank you for this great library, but despite reading almost all the documentation, i haven't found a way to generate time series graphs. Here's a sample dataset : (please note the timestamp in this example is "human readable" dd/mm@hh:mm) Serie 1 (Probe 1) Timestamp | Level 02/01@10:00| 0.11 02/01@14:00| 0.91 03/01@08:00| 0.58 04/01@10:00| 1.11 Serie 2 (Probe 2) 02/01@10:00| 1.18 03/01@18:30| 0.1 04/01@20:48| 2.1 No data Serie 3 (Probe 3) 02/01@10:00| 0.14 02/01@14:00| 1.02 03/01@09:00| 0.73 04/01@10:00| 0.80 Pchart allow me to display my datas (level) with one adaptive Y-scale, but on the X-scale i'm stuck, i can't pass the timestamp of all my Series without ruining the graph  I know this can be done with Jpgraph ( LinePlot($datay,$datax) ), but i really don't want jpgraph anymore. Thank you 
Last edited by zigzag on Thu Jan 12, 2012 2:54 pm, edited 1 time in total.
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| Wed Jan 04, 2012 10:25 pm |
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mila76
Regular pChart user
Joined: Mon Dec 19, 2011 12:19 am
Posts: 14
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 Re: TimeSeries support?
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| Thu Jan 05, 2012 3:18 am |
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zigzag
pChart user
Joined: Wed Jan 04, 2012 10:02 pm
Posts: 5
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Re: TimeSeries support? Hello, yes :
$MyData->setXAxisDisplay(AXIS_FORMAT_TIME,"d/m\nH:i");
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| Thu Jan 05, 2012 4:13 am |
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mila76
Regular pChart user
Joined: Mon Dec 19, 2011 12:19 am
Posts: 14
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Re: TimeSeries support? post your code, this example work Code: <?php
/* pChart library inclusions */
include("../class/pData.class.php");
include("../class/pDraw.class.php");
include("../class/pImage.class.php");
/* Create and populate the pData object */
$MyData = new pData();
$MyData->addPoints(array(0.11, 0.91, 0.58, 1.11),"Probe 1");
$MyData->setAxisName(0,"Temperatures");
$MyData->addPoints(array(1328112000, 1328126400, 1330610400, 1330617600),"Labels");
$MyData->setAbscissa("Labels");
$MyData->setXAxisDisplay(AXIS_FORMAT_TIME,"d/m\nH:i");
/* Create the pChart object */
$myPicture = new pImage(600,280,$MyData);
/* Turn of Antialiasing */
$myPicture->Antialias = FALSE;
/* Add a border to the picture */
$myPicture->drawRectangle(0,0,599,279,array("R"=>0,"G"=>0,"B"=>0));
/* Set the default font */
$myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6));
/* Define the chart area */
$myPicture->setGraphArea(40,16,580,244);
/* Draw the scale */
$scaleSettings = array("XMargin"=>10,"YMargin"=>10,"Floating"=>TRUE,"GridR"=>200,"GridG"=>200,"GridB"=>200,"DrawSubTicks"=>TRUE,"CycleBackground"=>TRUE);
$myPicture->drawScale($scaleSettings);
/* Turn on Antialiasing */
$myPicture->Antialias = TRUE;
/* Draw the line chart */
$myPicture->drawLineChart();
/* Render the picture (choose the best way) */
$myPicture->autoOutput("pictures/example.drawLineChart.simple.png");
?>
Attachments:
ex.png [ 8.97 KiB | Viewed 8614 times ]
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| Thu Jan 12, 2012 10:52 am |
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zigzag
pChart user
Joined: Wed Jan 04, 2012 10:02 pm
Posts: 5
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Re: TimeSeries support? Hi, i don't have the original code since i found a solution. I'm going to try to explain what's wrong with this code. Code: $MyData->addPoints(array(0.11, 0.91, 0.58, 1.11),"Probe 1");
$MyData->setAxisName(0,"Temperatures");
$MyData->addPoints(array(1328112000, 1328126400, 1330610400, 1330617600),"Labels"); This code IS working, but for ONE probe and ONE timestamp, or X probes that have exactly the same timestamps. I have 5 probes, and for each probe i have both the timestamp and the data. With your code, you can have 5 probes but the probes have to share the same timestamp as you defined here : $MyData->addPoints(array(1328112000, 1328126400, 1330610400, 1330617600),"Labels"); The workaround i've found is to merge all my timestamps and add VOIDs to my probe datas if timestamp is not found. Sorry if it's confusing, i know my english is not good.
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| Thu Jan 12, 2012 12:11 pm |
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mila76
Regular pChart user
Joined: Mon Dec 19, 2011 12:19 am
Posts: 14
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Re: TimeSeries support? Quote: Sorry if it's confusing, i know my english is not good. your point is clear... for how pChart work i don't think there is another way in this topic viewtopic.php?f=1&t=173 jean-damien says: Quote: I'm thinking on how to get it implemented yes. My guess is that non-linear X scales will be implemented directly withing the current scaling methods. This will force a rewritting of some part of the scaling and charting functions --nothing too complicated hopefully.
I can't promise it for the next sub release but it will come in the following one.
Last edited by mila76 on Fri Jan 13, 2012 7:11 pm, edited 1 time in total.
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| Thu Jan 12, 2012 1:17 pm |
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zigzag
pChart user
Joined: Wed Jan 04, 2012 10:02 pm
Posts: 5
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Re: TimeSeries support? Ok, thanks for your help, hope this feature will come with the next pChat release
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| Thu Jan 12, 2012 2:54 pm |
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