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- ' PGLINEMS.BAS - Program to generate a simple multi-data series line chart
-
- DEFINT A-Z
- '$INCLUDE: 'CHRTB.BI' ' Declarations and Definitions
- DIM Env AS ChartEnvironment ' Variable to hold environment structure
- DIM AxisLabels(1 TO 4) AS STRING ' Array of categories
- DIM LegendLabels(1 TO 2) AS STRING ' Array of series labels
- DIM Values(1 TO 4, 1 TO 3) AS SINGLE ' 2-dimentsion array of values to plot
-
- DIM Col%(0 TO cPalLen) ' Define arrays to hold values retrieved with
- DIM Lines%(0 TO cPalLen) ' call to GetPaletteDef. By modifying these
- DIM Fill$(0 TO cPalLen) ' values, then calling ResetPaletteDef, you
- DIM Char%(0 TO cPalLen) ' can change colors, plot characters, borders,
- DIM Bord%(0 TO cPalLen) ' and even the line styles and fill patterns
-
- ' Read the data to display into the arrays
-
- FOR index = 1 TO 2: READ LegendLabels(index): NEXT index
- FOR index = 1 TO 4: READ AxisLabels(index): NEXT index
-
- FOR columnindex = 1 TO 2 ' The array has 2 columns, each of
- FOR rowindex = 1 TO 4 ' which has 4 rows. Each column rep-
- READ Values(rowindex, columnindex) ' resents 1 full data series. First,
- NEXT rowindex ' fill column 1, then fill column 2
- NEXT columnindex ' with values from the last DATA
- ' statement (below).
- CLS
-
- ChartScreen 2 ' Set a common graphics mode
-
- ' Retrieve current palette settings, then assign some new values
-
- GetPaletteDef Col%(), Lines%(), Fill$(), Char%(), Bord%()
-
- Col%(2) = (15) ' Assign white as color for second-series plot line
- Char%(1) = (4) ' Assign "" as plot character for 1st plot line
- Char%(2) = (18) ' Assign "" as plot character for 2nd plot line
-
- ' Reset the palettes with modified arrays
-
- SetPaletteDef Col%(), Lines%(), Fill$(), Char%(), Bord%() ' Enter the changes
-
- DefaultChart Env, cLine, cLines ' Set up multi-series line chart
-
- ' Display the chart
-
- ChartMS Env, AxisLabels(), Values(), 4, 1, 2, LegendLabels()
-
- SLEEP ' Keep it onscreen until user presses
- ' a key
- END
-
- ' Simulated data to be shown on chart
- DATA "Qtr 1","Qtr 2"
- DATA "Admn","Markg","Prodn","Devel"
- DATA 38,30,40,32,18,40,20,12
-
-