gsn_csm graphical interfaces
Data files for some examples
Example pages containing:
Cylindrical Equidistant (CE) Projections
High Level Plot Interfaces on a CE projection
The functions below will also give you a cylindrical equidistant map
plot by default, unless you
set mpProjection to something
other than "CylindricalEquidstant":
: Colorized subregion plot with
default NCL lat/lon labels.
cnFillOn = True, turns on a color plot.
cnLinesOn = False, turns off the contour lines.
(available since NCL version 4.2.0.a020) is
a special resource that tell the plot template to use the full range of
In order to plot a subregion, the map must be limited. For a cylindrical
equidistant projection the correct method to limit the map is by
lat/lon. The plot template sets this initial resource for you. To see
what other methods exist and what projections they apply to, review the
You must specify the four limits of the map, however:
It is also required
to set gsnAddCyclic to False whenever you
plot a non-global domain.
In March of 2002, lat/lon tick mark labels were added to NCL. These
look different from the ones that the plot template creates for us
(see first two examples). You can choose which you prefer. Set pmTickMarkDisplayMode = "Always" to
access the new default tickmarks (available since NCL version
: Turns off the map fill and
adds a side zonal average.
gsnZonalMean turns on the side zonal mean
plot. This only works for contour plots. gsnZonalMeanXMaxF and gsnZonalMeanXMinF allow the user to change the
X-axis of the zonal average plot. gsnZonalMeanYRefLine sets the value that the
reference line will be drawn at on the zonal average plot, the default
value = 0.
cnInfoLabelOn turns off the
contour info label.
The placement of the line labels is controlled by the cnLineLabelPlacementMode resource. The
default is random. Also demonstrated is the "computed" value.
mpFillOn = False, turns off the
gsn_panel is the graphical interface
that creates a panel plot. More panel