CMY color in USGS polygons

[Ike]

Is there a way to utilize CMY colors found in some USGS Geologic map products (only available as .shp) when converted to .tab?

The .shp file has Color_cmy field for each polygon.  Is there a way to Thematically map these colors to match ( or closely) match original USGS colors?  Alternatively is there a way to modify the region style to match these original colors?

Thanks,

Ike

[Uffe Kousgaard]

Hi,

Code for this task, could look like the one below. It assumes 3 seperate fields, with c, m and y values.
In the range 0-255. Adapt for your specific file format. Untested !!

Regards
Uffe Kousgaard


include "mapbasic.def"

dim obj as object
dim row as integer
Dim b_fillstyle As Brush

fetch first from mytable
row = 1
while not eot(mytable)
  obj = mytable.object
  b_fillstyle = makebrush(2,rgb(255-mytable.c, 255-mytable.m, 255-mytable.y),0)
  alter object obj Info OBJ_INFO_BRUSH, b_fillstyle

  update mytable
  set object = obj
  where rowid = row

  fetch next from mytable
  row = row+1
wend

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[Ike]

Thank you Uffe,

I'm unfamiliar with coding.  I'll look into using Mapbasic.

Cheers, Ike