We suggest the following path to master the development of a CGI program providing a line chart.
After installing library GRAPHIT, have a look at the ILE-RPG CGI programs mentioned hereafter
and you will soon know what to do for your own CGI programs.
Press this link to display a static page showing a line chart
(the same showed at the bottom of this page).
By displaying the source of that page one would start understanding how the line chart is implemented.
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Please note the following javascript statement: var myLine= new Chart(document. getElementById("canvas") .getContext("2d")) .Line(chartData);
The piece establishing the type of chart is the Line qualifier.
As next step, you would like to develop a very simple CGI program which does show the same static page.
CGI program linecgi does exactly that.
CGI program sales generates a line chart from three database file members.
CGI program yrdata generates a line chart from your manual input.
