Tagged Questions

7
votes
11answers
1k views

Logging GPS and Accelerometer Data - Device Suggestion?

I am looking for a device that can track my location (lat,long) and speed all day long. Perhaps, I need GPS and accelerometer data bundled together. What I want to do is to log my daily activities. I ...
2
votes
3answers
328 views

How Can I Correctly Transform (Unproject?) from LCC

I am a complete n00b when it comes to GIS, so please bear with me. I started out by posting here: http://stackoverflow.com/questions/6963991/how-can-i-transform-the-coordinates-of-a-shapefile . In ...
2
votes
2answers
3k views

How can I export county level data in a .shp file to a text (csv) file in ArcMap?

I have a shape file created as per the answer to my previous question, which includes county level means for each county in the US. How can I now export this data in a .csv file, e.g. with just the ...
7
votes
3answers
450 views

How can I make a county-level shape file from a set of points at 30 x30 km spacing?

I have a data set in csv form, like: latitude, longitude, value -45, 45, 10 .... I would like to calculate county level means from these data, using either ArcGIS or R+grass. I have the ArcGIS USA ...
15
votes
4answers
480 views

How to handle TIME in GIS?

Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
2
votes
1answer
551 views

How to process topographic survey data in ArcGIS?

I am interested to find out how others process topographic survey data in ArcGIS. Often I am only given a text file or an Excel spreadsheet containing XYZ points and simple attribute information ...
11
votes
4answers
2k views

Simplifying adjacent polygons

I encountered a problem simplifying set of polygons that are adjacent. If I simplify each polygon separately with the Douglas–Peucker algorithm (which is used by many open source tools), the resulting ...