Changes between Version 4 and Version 5 of FAQ

Timestamp:

01/23/08 20:35:51 (16 years ago)

Author:

kolasinski

Comment:

--

FAQ

@@ -13 +13 @@
 }}}
 
+----
+
+- Is there a way of altering the colour bar ? The colour bar on the
+attached Dec1997_MSL (mean sea-level pressure) graph appears to be
+erroneous, with no values shown.
+
+- The colors are defined via 'color palettes' in the /config/palettes directory. The name of these is built from the variable name. There is already a mean sea level pressure one and what you just need to to is add the following line to the 3 files (in config) fld_glo.iso.def (global isolignes and mult/add factors), fld_glo_mmx.def (min/max) and fld_zoo_iso.def (same as glo_iso but for zoom plots)
+{{{
+MSL @slp
+}}}
+This will tell post-it to use the 'slp' contours and color settings which for instance in fld_glo_iso.def are :
+{{{
+slp         3     3     2     4    1016     2     4  0.01  0. hPa
+}}}
+The last 3 are for unit change from Pa to hPa (ax+b=001x+0), the first two (3,3) are not used and the next five set contour level in B&W plots (i.e when color palette are not used - see pal_type in plt_def.pro)
 
 ----
+
+- How can I use Post_It to plot pressure level data at a particular pressure? The ggap files contain variable values at each pressure value and I would like to plot the values at one pressure only. 
+
+- First make sure the field to read is 4D (use ncwa to get rid of spurious dimensions) and then in plt_def.pro use hpa_min and hpa_max to define the vertical averaging domain. This feature has not been used in a while for 3D atmosphere fields and may need some small fixing