GIS

Related to Geographic Information Systems Technology. May include some Remote Sensing Information

What Option Do I have ?

Fun at work !

ArcMap has stopped working

NLCD 2006 to GRID

This has bitten me twice now so I figured I should write about it to help me remember. It involves the error “ERROR 010240: Could not save raster dataset to”. I got this error everytime I tried to save a GRID from the NLCD 2006 img file. I found the following link that explained a lot.

http://support.esri.com/en/knowledgebase/techarticles/detail/38972

I'm still struggling with this so I may edit this post later if/when I discover more about it but the link will let you know that its not just you.

In Case they take this page down, here are the steps

USGS, creator of the NLCD data, provides the following workaround.

1. In ArcMap

Pasting Features from one layer to another in ArcMap

I'm sure most everyone knows how to do this but being old school (ArcInfo) I still get a kick out of some of the editing features in the newer (9.3) software. I really should be trying out version 10 but I might be overwhelmed.

I get a kick out of the ability to paste features from one layer to another. I've been digitizing a lot lately for a project. Here is how it works. In an edit session, clear all selections, then select the features you want to copy (in the from layer). Set target layer to the one you want to paste into. Open the from layer's attribute table and go to Edit - Copy. Then open the to layer's attribute table and go to Edit - Paste.

First night of class

Tonight starts the GIS 101 class again. I always like the beginning of the semester when fresh minds are exposed (often for the first time) to GIS. Hopefully I won't begin to burn them out until the very end of the semester at the earliest. We are just going over the very basics of the software tonight (zooming and panning, the magnifier view (does anyone really use that ?), basics of layers and symbology). Later in the semester we will do some simple selections, more advanced symbology (quantiles), tabular joins etc. Then even later we will try some editing, and geocoding. Then near the very end we start in on spatial operations like clip, union, intersect etc. and then I'll have them do a project. Hopefully some of the students will take to this.

ESRIUC 2011

As a follow up to my post about the conference, I decided to recap my experiences at the conference this year.

What I'm talking about
http://www.esri.com/events/user-conference/index.html

So this summer I had the pleasure of attending my 3rd ever ESRI International User's Conference in San Diego California. My first Conference was in July, 2001 and my second was in August, 2004 In 2004 I entered the Applications Fair with my VB6 version of the Watershed Characterization and Modeling System (WCMS) most of which, my colleagues Mike and Jackie Strager developed previously in Avenue.

The Power of the Calculate Tool

Just a little curiosity I discovered today. I've been working with a Python script that has some problems calculating a field using an expression. I figured out that the problem was the syntax used in the expression is treating a variable as if it were a field in the feature class (but it is not a field). This was obvious to me because the variable in the expression is surrounded by Python decode field characters (the exclamation mark).

Anyway my search landed me on this page.

ESRI Conference 2011

I'm excited to say that I'll be attending the ESRI User's Conference again this year (my 3rd ever). I'm presenting on Tuesday afternoon. The presentation is on research I'm doing with Dr. Brosi at Frostburg State University with Black Cohosh and American Bugbane (two plants that grow in the Central Appalachians). We have been looking at factors that affect flowering and we are also doing a risk of discovery evaluation (e.g. vulnerability to harvest).

ArcGIS 10 is coming in June 2010

I've been trying to skim through all the new information about there about the upcoming release of ArcGIS in June. There are a bunch of new concepts and new features. There is a new thing called the default geoDatabase, more windows are dockable now, editing is enhanced, and lots of simple (say boring) things like that. They have built in a map book feature. You can export map books to pdf.

There are data-driven Pages (w/ customizable dynamic text). This allows you to make a series of maps that can be structured to iterate through a layer's features as the basis for each map. This feature will is customizable using python.

The full power of Python can be used inside of ArcMap. You could then use Python as your command line and scripting environments.

ESRI Support is gone. Cached info. from Google is now the only hope.

Yes we all have growing pains when there is a site redesign but for years now I've been finding everything I need by going to Google and doing a search and adding site:esri.com at the end of the search string. This searches for info only within esri.com. Google's search engine is so good that I find it far better than searching ESRI's website for information. Well it appears that they pulled the plug on that and you know have to log in through your ESRI Global account to access information. The worst part is that even if you are logged in, the links from Google take you to the front page (http://support.esri.com/en). Thanks for ruining access to your website ESRI. Way to go ! NOT.

exiftool is very cool

I discovered this command line tool called exiftool written by Phil Harvey. It is a platform independant Perl library used to manipulate, edit, read, write exif data in photographic images. So far I've written a bash script to geotag images using user supplied geographic coordinates (DMS format) but it can also use GPS log files to geotag and geosync your photos. By default it creates a backup of the original but can also write over the original instead. It looks like a pretty powerful little tool. I think it was about 8MB to install it and it is freeware.
http://www.sno.phy.queensu.ca/~phil/exiftool/

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