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Monthly Archives: November 2011
A small, helpful routine
A small item this week because it’s Thanksgiving. In DG, you can close all open windows with a statement like this: IDL> while !d.window ne -1 do wdelete, !d.window Here’s my two-line equivalent in NG, wrapped into a procedure: pro … Continue reading
A cool visualization with Direct Graphics
Owen Kelley, a research scientist at NASA Goddard Space Flight Center and George Mason University, made this visualization of Hurricane Irene with programs he wrote using IDL Direct Graphics: Dr. Kelley explains that he’s created: “…an image of Hurricane Irene … Continue reading
An example of using the GRIB helper routines
Earlier I posted some higher-level routines, built on IDL’s GRIB API, for accessing data in a GRIB edition 1 or 2 file. I’d like to show an example of using them. In this example, I downloaded NCEP HiResWindow model data … Continue reading
Posted in data access, output, programming, visualization
Tagged (New) Graphics, GRIB, IDL 8, IDL 8.1, image, Linux, map projections, PNG
9 Comments
Disable window updates to improve (New) Graphics performance
When making a visualization with many graphic elements in NG, you can improve the render speed by disabling updates to the window. For example, this program displays a 3-by-5 grid of sample plots and prints to the console the time … Continue reading
Posted in language, programming, visualization
Tagged (New) Graphics, code performance, IDL 8
6 Comments
Introducing Exelis Visual Information Solutions!
As announced last January, ITT Corporation will spin off its businesses into three standalone companies. With this change, effective October 31, 2011, our parent organization, ITT Defense & Information Solutions, has become Exelis, Inc. A newly public company, Exelis, Inc … Continue reading
