![]() |
Language Reference » Dataset functions » negateValues
|
|
Latest updates
Toolbox
Google AdSense
|
negateValues - negate all your serie values This function allow you to negate the specified serie values. this function is usually used when you want to reverse the X axis. Calling this function
negateValues($SerieName);Where : SerieName is the name (or an array of name) of the serie(s) to negate. Sample script ![]() /* 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(4,VOID,VOID,12,8,3),"Probe 1"); $MyData->addPoints(array(3,12,15,8,5,5),"Probe 2"); $MyData->addPoints(array(2,7,5,18,19,22),"Probe 3"); $MyData->setPalette("Probe 1",array("R"=>220,"G"=>60,"B"=>20)); $MyData->setSerieTicks("Probe 2",4); $MyData->setSerieWeight("Probe 3",2); $MyData->setAxisName(0,"Temperatures"); $MyData->addPoints(array("Jan","Feb","Mar","Apr","May","Jun"),"Labels"); $MyData->setSerieDescription("Labels","Months"); $MyData->setAbscissa("Labels"); /* Reverse the Y axis trick */ $MyData->setAbsicssaPosition(AXIS_POSITION_TOP); $MyData->negateValues(array("Probe 1","Probe 2","Probe 3")); $MyData->setAxisDisplay(0,AXIS_FORMAT_CUSTOM,"NegateValuesDisplay"); function NegateValuesDisplay($Value) { if ( $Value == VOID ) { return(VOID); } else { return(-$Value); } } /* Create the pChart object */ $myPicture = new pImage(700,230,$MyData); /* Turn of Antialiasing */ $myPicture->Antialias = FALSE; /* Draw a background */ $Settings = array("R"=>190, "G"=>213, "B"=>107, "Dash"=>1, "DashR"=>210, "DashG"=>223, "DashB"=>127); $myPicture->drawFilledRectangle(0,0,700,230,$Settings); /* Add a border to the picture */ $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0)); /* Write the chart title */ $myPicture->setFontProperties(array("FontName"=>"../fonts/Forgotte.ttf","FontSize"=>11)); $myPicture->drawText(150,35,"Average temperature",array("FontSize"=>20,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE)); /* Set the default font */ $myPicture->setFontProperties(array("FontName"=>"../fonts/pf_arma_five.ttf","FontSize"=>6)); /* Define the chart area */ $myPicture->setGraphArea(60,60,650,220); /* 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->drawSplineChart(); $myPicture->drawPlotChart(array("PlotBorder"=>TRUE,"BorderSize"=>1,"Surrounding"=>-60,"BorderAlpha"=>80)); /* Write the chart legend */ $myPicture->drawLegend(540,20,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL)); /* Render the picture (choose the best way) */ $myPicture->autoOutput("pictures/example.drawSplineChart.simple.png");
© Copyrights
Components used on this web site : Famfamfam icons has been made by Mark James, Rounded corners lite has been coded by Cameron Cooke and Tim Hutchison, SyntaxHighlighter has
been written by Alex Gorbatchev. pChart and this web site have been created by Jean-Damien POGOLOTTI. This documentation contains 185 pages and 56 comments. 413 users have registered.
This page has been rendered in 0,02 seconds. Wiki revision 1.37.
|