Displaying high resolution grids in the IDV can be memory intensive. If you are reading from a remote server, you also have to deal with the latency of reading the grids across the internet. There are several strategies you can use to reduce the amount of memory used by the IDV.
Edit→Remove All Displays and Data
menu to remove the displays
created in the previous exercise.Catalog
data chooser, select the
Main IDV Catalog→Unidata IDD Model Data→UCAR(motherlode)→North American Model→NCEP NAM CONUS 12 km→latest NCEP NAM CONUS 12km
dataset.
Data Source Properties
editor for Latest NCEP NAM CONUS 12km
.
Times
tab. select the
Use Selected
menu item. Right click on the panel
and select the Select every third one
menu option.Spatial Subset
tab. You can spatially
subset the grid by stride (e.g. every nth point) and/or by
region. Set the X Stride
to
Every third point
. Notice that the
Y Stride
is linked to the X Stride
.
All points
and
select a sub-region on the map.
Field Selector
, select the
3D grid->Temperature @ pressure
field and
the Contour Plan View
display.Level
tab of the Data Subset
panel,
select the 50000 Pa
(500 millibar) level.
Create Display
button.