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Chart Design Overview (ESP)This page describes the basic steps and related subroutine calls for creating a simple chart.Description:Designing a chart can be as simple as calling two subroutines - one to initialize a new chart specification (.CHART INITIALIZE) and one to render the chart (.CHART RENDER). The following example illustrates the ILF statements needed to initialize and render a default pie chart (/tmp/piechart.png) using a previously defined dataset consisting of seven data values.* Initialize Pie Chart PASS PIE CHART FIELD SHARE? N GOSUB 0CD .CHART INITIALIZE * Note: We aren't showing the steps to supply the data, * see the next example * Render chart SET --- TEMP 256 = /tmp/piechart.png PASS --- TEMP 256 FIELD SHARE? Y GOSUB 0CD .CHART RENDER By adding a few additional subroutine calls to set a title, seven data values with sector labels, and a 3D view, a more useful chart can be rendered. * ================================================================ * Create Pie Chart * ================================================================ * Initialize a Pie Chart PASS PIE CHART FIELD SHARE? N GOSUB 0CD .CHART INITIALIZE * Set a title PASS Sales % By Day of Week FIELD SHARE? N GOSUB 0CD .CHART SET TITLE * Set 3D view PASS 3D FIELD SHARE? N GOSUB 0CD .PIE SET VIEW * Add pie sectors with day of week labels and data values PASS 25 FIELD SHARE? N PASS Monday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 14 FIELD SHARE? N PASS Tuesday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 36 FIELD SHARE? N PASS Wednesday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 2 FIELD SHARE? N PASS Thursday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 12 FIELD SHARE? N PASS Friday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 33 FIELD SHARE? N PASS Saturday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT PASS 5 FIELD SHARE? N PASS Sunday FIELD SHARE? N GOSUB 0CD .PIE SECT ADD NEXT * ================================================================ * Render chart * ================================================================ SET --- TEMP 256 = /tmp/piechart.png PASS --- TEMP 256 FIELD SHARE? Y GOSUB 0CD .CHART RENDER CommentsRead what other users have said about this page or add your own comments.-- SteveFrizzell - 2010-04-01 |