A color scheme is a set of colors that will be applied to your data series in order to make them visually different.

When you download the pChart library, some color schemes are included. In the simplest way of working, you don‘t need to load a color scheme in your script as a default one is already included in the library itself, so no need of external palettes. You‘ll see here the list of the bundled schemes :

"Light" color set File name : light.color

"Summer" color set File name : summer.color

"Evening" color set File name : evening.color

"Autumn" color set File name : autumn.color

"Spring" color set File name : spring.color

"blind" color set File name : blind.color

"Kitchen" color set File name : kitchen.color

"Navy" color set File name : navy.color

"Shade" color set File name : shade.color

A color scheme is a text file containing a list of colors. Colors are composed of their Red, Green, Blue and Alpha properties. To create your own color scheme, just create a CSV file using a coma as delimiter between the parameters and a carriage return to separate the colors :

239,210,121,100
149,203,233,100
2,71,105,100
175,215,117,100
44,87,0,100
222,157,127,100

To apply a color scheme to your chart, you can use the loadPalette function. This function must be called before any charting function.

 /* Create the pData object */
 $MyData = new pData(); 

 /* Populate some data */
 $MyData->addPoints(array(1,2,3,4),"My Serie 1");

 /* Will replace the whole color scheme by the "light" palette */
 $MyData->loadPalette("palettes/light.color", TRUE);

..then draw your charts.