Listers,
I would like to be able to use a more diverse colour scheme to
thematicise a map through a mapbasic application. There is a always
varying number of map objects to colour so I cant hardcode the colour
scheme. I am able to generate a thematic map using a "from" and "to"
brush with one mid point inflection in the colour scheme. However the
colour scheme just doesn't vary enough to make real obvious distinctions
when there area a lot of map objects to thematicise.
Can someone give me some ideas on how to use a much wider range of
colours in the thematic mapping process, please. Below is a snippet of
the thematicising code that I am presently using.
Create Styles
From Brush(2, GREEN, 0) 'style for LOW range
To Brush (2, YELLOW, 0) 'style for HIGH range
Vary Color By "RGB"
Number counta
Inflect at Int(counta/2) With Brush(2, 16765160, 0)
Into Variable brush_styles
countab = 1
Fetch First from entries
Do While NOT EOT (entries)
thisbrushstyle = brush_styles(countab)
s_comoname = entries.Common_Name
ashadevalustr = Chr$(34) & s_comoname & Chr$(34) & " " &
thisbrushstyle & " Pen(1,2,0)"
If countab > 1 Then
shadevalustr = shadevalustr & ", " & ashadevalustr
Else
shadevalustr = ashadevalustr
End If
countab = countab + 1
Fetch Next from entries
Loop
cmdstr = "shade window " & map_id & " pestmment with Common_Name
ignore "" "" values " & shadevalustr
Run command cmdstr
Thanks
Doug Pease
GIS Officer
Livingstone Shire Council
PO Box 600
Yeppoon 4703
Qld Australia
Ph 07 49399957
Fax 07 49393290
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