Each week, Harris Geospatial posts new blog content across a variety of categories. Browse our latest posts below or use the menu on the right to filter posts by a specific category or author.



6 Oct

Implicit Get/SetProperty calls in user-defined classes

Mark Alonzo | Comments (0) | Number of views (2862) | Article rating: No rating

Operator overloading in user-defined classes was introduced in IDL 8 through the IDL_Object class. Mike Galloy explains how to use this technique here. One somewhat overlooked feature of... Read More >

4 Oct

Getting to Know LiDAR

Mark Alonzo | Comments (0) | Number of views (6610) | Article rating: No rating

I’ve worked with a lot of different types of geospatial data in my years at ITT VIS, but one type that I’ve had relatively little experience with is LiDAR. So, when ITT VIS announced... Read More >

29 Sep

Using IDL 8 Graphics (a.k.a. New Graphics)

Mark Alonzo | Comments (0) | Number of views (918) | Article rating: No rating

I’ve been using Direct Graphics (DG) in IDL since 1993. I was initially hesitant about IDL 8 Graphics (christened “New Graphics” on the comp.lang.idl-pvwave newsgroup; I’ll refer to them as NG),... Read More >

27 Sep

Over the Moon

Mark Alonzo | Comments (0) | Number of views (5) | Article rating: No rating

Have you seen the new images from the Lunar Reconnaissance Orbiter (LRO)?  The orbit of the LRO was recently adjusted to bring the sensor closer to the Moon than before.  You can see the... Read More >

22 Sep

GRIB helper routines

Mark Alonzo | Comments (0) | Number of views (1018) | Article rating: No rating

IDL's GRIB routines are a thin layer on top of the the C version of the ECMWF GRIB API.  The ECMWF routines exposed in IDL are fairly low-level, so they require a bit of programming to extract... Read More >

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