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Technology Blog Articles

Each month, NV5 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. Stay informed of the latest blog posts, news, events, technologies, and special offers by joining our email list. Sign up now!



Making movies with IDL, part I

Making movies with IDL, part I

1/12/2012

Over the years there have been many ways to make movies with IDL, but none of them have been great. I think we now have a robust solution: the IDLffVideoWrite class, introduced in IDL 8.1, wraps FFmpeg, which can create a movie in just about any format. This week, I’ll show an example of using IDLffVideoWrite with Direct Graphics (DG).... Read More >

Defining the Enterprise

Defining the Enterprise

1/10/2012

In a recent internal presentation, I attempted to define the Enterprise in terms of our products. We’ve been in the desktop software business for more than 30 years, and now we’re delivering Enterprise-level solutions as well. And like all things, there are some growing pains around this, coming up with a consistent definition of... Read More >

A technique for flexible Get/SetProperty methods in IDL 8

A technique for flexible Get/SetProperty methods in IDL 8

1/5/2012

(Note: This is a guest post by Ron Kneusel, a Senior Consultant in the Exelis VIS Professional Services Group. I frequently bug Ron with questions about computer science, IDL and Linux. –MP) IDL's new hash table object, along with some sneaky programming, makes it possible to implement very flexible GetProperty and SetProperty methods for... Read More >

Displaying exploded axes with (New) Graphics

Displaying exploded axes with (New) Graphics

12/22/2011

Here’s another hacktastic example for your enjoyment: displaying exploded axes in a (New) Graphics plot. Start by making a plot with axis labels and ticks that point outward, and include some extra room around the margins: p = plot(/test, margin=0.2, xtickdir=1, ytickdir=1) Next, get the x- and y-axis ranges: xr =... Read More >

DEM versus DTM versus DSM

DEM versus DTM versus DSM

12/20/2011

There are a few terms that I find to be especially confusing to the community of people who use our geospatial software. I thought it might be useful to clarify how I and others at NV5 use some of those terms.  In this post, I’ll cover DEMs, DTMs, and DSMs. Read this post about the terms georeference, geolocate, and... Read More >

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