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internal:administration:idl [2026/03/19 20:44] – [contour] janinternal:administration:idl [2026/03/19 20:55] (current) – [contour] jan
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   extrm_lev_max = +(machar()).xmax   extrm_lev_max = +(machar()).xmax
      
-See function [[https://www.harrisgeospatial.com/docs/machar.html|function machar]].+See function [[https://www.nv5geospatialsoftware.com/docs/MACHAR.html|function machar]].
  
  
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 === line patterns === === line patterns ===
  
-contour provides hatch patterns - but note: the first fill with a solid color, i.e. the pattern is not transparent.+contour can draw hatch patterns - but note: the pattern is not transparent.
  
   contour, z, x, y, $   contour, z, x, y, $
     levels = levels, $     levels = levels, $
     c_orientation = [ 0 , 22, 45, 90, ... ] , $ ; orientation of the lines in degrees     c_orientation = [ 0 , 22, 45, 90, ... ] , $ ; orientation of the lines in degrees
-    c_spacing = 0.5 ; spacing between lines in cm+    c_spacing = [ 1, 0.5, 0.25, ... ] ; spacing between lines in cm
          
  
 === Path of contour lines === === Path of contour lines ===
  
-contour provide the pathes of the contour lines:+contour can provide the pathes of the contour lines:
  
   contour, z, x, y, $   contour, z, x, y, $
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     /path_data_coords, $ ; want to have data coordinates in data_xy instead of normalized coo's.     /path_data_coords, $ ; want to have data coordinates in data_xy instead of normalized coo's.
     /path_double, $ ; you need double if eg x is time as julian day     /path_double, $ ; you need double if eg x is time as julian day
-    /overplot ; avoid contour to rescale the axes - if you alread had a plot or contour plot you want to reuse+    /overplot ; avoid contour to rescale the axes - if you already had a plot or contour plot you want to reuse
  
-path_info is an array of CONTOUR_PATH_STRUCTURE. The number of elelemtns gives the numbefr of sub pathes. +path_info is an array of CONTOUR_PATH_STRUCTURE. The number of elelemtns gives the number of sub pathes. 
-Elements offset and N give the starting index and length of every isoline in path_xy.+Elements %%offset%% and %%N%% give the starting index and length of every isoline in path_xy.
  
 You can then use the pathes in poly_fill to do transparent hatch patterns:  You can then use the pathes in poly_fill to do transparent hatch patterns: 
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 === color bar === === color bar ===
  
-You can use contour also to make a **color bar**:+You may want to have a color bar setting the colorshading in relation to values. 
 +You can use contour to make a **color bar**:
  
 A **horizontal** color bar at the bottom A **horizontal** color bar at the bottom
internal/administration/idl.1773953086.txt.gz · Last modified: by jan