Differences

This shows you the differences between two versions of the page.

--- internal:administration:idl [2026/03/19 20:50] – [contour] jan
+++ internal:administration:idl [2026/03/19 20:55] (current) – [contour] jan
@@ Line 3093: / Line 3093: @@
 === 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, $
     levels = levels, $
     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 ===
-contour provide the pathes of the contour lines:
+contour can provide the pathes of the contour lines:
   contour, z, x, y, $
@@ Line 3111: / Line 3111: @@
     /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
-    /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:
@@ Line 3129: / Line 3129: @@
 === 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