This tag should only be used for questions concerning ArcGIS the GIS Platform from Esri. Try wherever possible to use a product tag such as arcgis-desktop, arcgis-server, arcgis-mobile or arcgis-online on conjunction with a version tag such as arcgis-10.1, arcgis-10.0 or arcgis-9.3.
7
votes
1answer
974 views
How to find the mid-point of a line in arcpy
How can the mid-point of a polyline be calculated using the geoprocessing framework, eg in a Python script?
The polyline.centroid property returns The true centroid if it is within or on the feature; ...
7
votes
2answers
746 views
Create “Inner Buffer” in ArcGIS
I am currently searching for a possibility to create an "Inner Buffer" in ArcGIS.
I have a lot of polygons (houses)(in one feature class) and one big polygon (in one other feature class). I want so ...
7
votes
2answers
245 views
Geocoding through a language barrier
This is related to a previous question of mine.
It has come to my attention that the streets file I use as my address locator in Canada uses French (or simply accented) characters for the names. ...
7
votes
5answers
8k views
How to find the distance of a point along a polyline?
We need to find the distance of a series of point along a given polyline.
We have a polyline dataset repsenting rivers in a catchment, broken up into river reaches (FID 1 through 35 for example).
We ...
7
votes
6answers
774 views
How to integrate SAGA Python Modules into ArcGIS Desktop?
I have been having a look at SAGA (http://www.saga-gis.org/en/index.html) and it seems to have some nice tools for geoprocessing. I was wondering if anyone out there has had any luck bringing SAGA ...
7
votes
5answers
1k views
What type of interpolation should I use to visualize metal detection survey data?
I have about 500,000 points collected in a linear grid pattern over a 1 km2 area. The points were collected as part of a metal detection survey. Each point has X,Y and Coil Response mV (min -675.38 ...
7
votes
5answers
2k views
Is there an existing library for converting ArcGIS Features to Json?
Is there an existing library for converting ArcGIS IFeature types to and from Json/GeoJson?
7
votes
3answers
278 views
Is there a way to Query what's “NOT THERE”?
If you have land tenure mapping, and you're only interested in the areas for which there are no polygons in a region, is there a way to query these areas out and create a shapefile from them.
A ...
7
votes
2answers
1k views
Workflow for determining stream gradient?
As far as data goes, I'm working with NHD .shp files, 10m DEMs, and some LIDAR data.
My goal is to determine gradient for 100m segments of a network of streams.
I'm already able to do this, but I ...
7
votes
5answers
2k views
Can you use ArcGIS Online Base Maps without ESRI Software?
Since the end of January 2011:
"ArcGIS Online map services are
available at no cost regardless of
use." - http://www.esri.com/software/arcgis/arcgisonline/standard-maps.html
However, the ...
7
votes
2answers
197 views
How to create a solar intensity map for a garden plot?
I'm interested in creating a raster surface that depicts the average solar intensity per unit area for a small garden plot. I imagine the inputs into the model would be the following:
Plot ...
7
votes
2answers
239 views
Where can I find a shapefile basemap for the Indian Ocean?
I need to plot point data over a basemap of the Indian Ocean. Can anyone tell me where I can find such a basemap in shapefile format? I use ArcView 9.
Thank you.
7
votes
5answers
5k views
Get boundary of raster image as polygon in ArcGIS 10
I have a rectangular raster image in ArcGIS. My question is: how can I produce a polygon which is just the extent of the raster image? That is, I want to have a polygon layer with a single ...
7
votes
3answers
195 views
ArcGIS data capacity
For any ArcGIS users, how large of a dataset (in terms of number of records) can ArcGIS comfortably render on the screen at once? For example, if I have an excel spreadsheet with 15k records, will ...
7
votes
2answers
481 views
Can ArcGIS and OSGeo4W share the same python install?
I don't like unnecessary duplication. Is it possible to install python only once and have both ArcGIS and OSGeo4W use it?
7
votes
2answers
225 views
ArcGIS 10.1 edit PostgreSQL layer
I've been working with QuantumGIS/PostgreSQL/postGIS for a while now, without problems. But now I have to change QuantumGIS for ArcGIS 10.1.
I'm having trouble adding a layer from PostgreSQL and ...
7
votes
7answers
1k views
How to Remove return/newline (\n) character from Field using Python and Field Calculator?
I have a geodatabase table with a field that I'm trying to remove return characters (new line). I found this post (How can I remove (chomp) a newline in Python?) of how to do it, however it is not ...
7
votes
2answers
3k views
Issues with large datasets
I am trying to run an Intersect process in arcgis 10 sp 3 with 2 file sets (aspect and slope) from up to a 1m DEM across an area of 65,000sq km. The aspect has 9,930,384 records and the slope has ...
7
votes
3answers
894 views
Managing ArcGIS floating licenses
How do you manage your ArcGIS floating license pool?
I have to field several calls a week, or sometimes a day, from staff wanting to be able to check out Spatial Analyst or ArcInfo but they can't ...
7
votes
2answers
251 views
How to increase maximum memory usage cap for running Arc 10.1?
Not sure if this is strictly GIS related or perhaps belongs on StackOverflow...it is regarding ESRI ArcGIS 10.1, so I'm sticking it here.
I'm looking for options to increase processing capacity, and ...
7
votes
1answer
253 views
Reduce extent of raster processing
I need to reduce the processing extent of my raster by some sort of automatic procedure in python. Currently the borders of the dataset I've been using has anomalies (due to the classification of the ...
7
votes
1answer
894 views
Postgresql for Qgis and Arcgis - What to do/What not to do
Is it possible to use postgresql with QGIS and ArcGIS? One database for different clients. Is it anything that I have worry or any problems to use the DBMS from two different software? I know that I ...
7
votes
2answers
375 views
Locked/Uneditable Map Document
I am wondering if its possible to create a locked map document?
I have a document that multiple users will be accessing and as a way of preventing them from making any accidental errors, am wondering ...
7
votes
2answers
323 views
Is it a bad idea to hold references to ArcObjects inside business classes?
According to best practices is it a bad idea to cache features and geometries inside business objects? If it is bad, what is the alternative way?
References to features may be replaced with their ...
7
votes
3answers
409 views
How do I create a raster randomly choosing a cell value from 2 or more overlapping rasters?
I'm using Arc 10. I want it to combine multiple rasters into one, always choosing randomly from the values of overlapping cells. I have an image that may explain this better:
7
votes
4answers
885 views
Questions on Esri Technical Certification
Starting mid-January you will be able to register for a series of Technical Certifications from Esri and I was interested in doing this, but have not been able to find out too much information about ...
7
votes
3answers
314 views
How to query all records (>1000) and export to csv?
I posted in arcgis forum but never got any answer.
Can anyone tell me how to solve this?
Assume you have a vehicle tracking records from Oct.1 to Dec. 31 with wind speed information.
All data is ...
7
votes
5answers
890 views
Calculate distance in km to nearest points (given in lat/long) using ArcGIS
I have two point datasets in ArcGIS, both of which are given in WGS84 lat/lon co-ordinates and the points are spread across the whole world. I would like to find the nearest point in Dataset A to each ...
7
votes
4answers
3k views
Best book for learning ArcGIS functionality?
I was wondering what the best book(s) for learning how to use most of the ArcGIS functionality were that I could use in conjunction with books on the theory of GIS since even though I can understand ...
7
votes
3answers
331 views
How do I figure out if there are clusters of one set of points around another set of points from a different layer?
I want to see if there is clustering of a certain type of buildings (x) around another type of buildings (y). The two point files are in different layers. I cannot figure out which tool I would use to ...
7
votes
1answer
559 views
Partially update a raster (a DEM)
My todays question is: How to update an .img DEM in ArcView 9.3?
I do have DEM which need to be updated only if few parts. The area to be updated has been produced in separate DEM with Spline ...
7
votes
1answer
109 views
Ternary Legends - how to represent in Arc
I've got a composite image built up from Red Green and Blue composite colours. Each channel represents the differing concentration of a different variable in each location - with 0 being the lowest ...
7
votes
2answers
140 views
Using ArcGIS to filter cells where 7 or 8 of the neighbors are different
I have land cover data that I would like to clean using some generalization tools. Majority filter does almost exactly what I want, but is missing one key option. Majority filter allows you to change ...
7
votes
3answers
481 views
python script error- with GetParameterAsText
I have a seemingly simple code which iterates through a list of feature classes and calculates an ID field in the attribute table that is equal to the first 5 characters of feature class name. The ...
7
votes
2answers
300 views
Transform bookmarks to data driven pages in ArcGIS?
We have this large project in ArcGIS with 30 maps with different extents using Bookmarks to pan between these maps/pages.
Now we would like to use Data driven pages instead. The question is, is it ...
7
votes
2answers
1k views
Rotate features in ArcGIS 10
I have a series of polygons that I want to rotate. Each polygon has a rotate angle field and an anchor point xy coordinate fields. All anchor point xy's are on a node of the polygon. What is the ...
7
votes
1answer
763 views
How do we add a custom basemap in ArcGIS.Com that can be used in Javascript API?
It's possible to add a layer as a basemap in ArcGIS.com by checking the check box use as baselayer:
But when I consume the map using:
var mapDeferred = esri.arcgis.utils.createMap("<guid>", ...
7
votes
3answers
796 views
How to create TINs in ArcGIS from triangular elements
I am working with FEM models with triangular elements, and I'd like to view the results as TIN surfaces in ArcGIS (and in ArcScene). In my external source, I have nodes (with X,Y,Z coords) and ...
7
votes
4answers
780 views
Why doesn't US One Address locator style have city, state or zip code fields?
I am using the file:
C:\Program Files\ArcGIS\Desktop10.0\Locators\US One Address.lot
To do address resolution on a parcel / polygon layer. I'm trying to understand why the file doesn't contain ...
7
votes
2answers
638 views
Is it possible to emulate “Swiss style” shaded relief with ArcGIS tools?
Is there a way to create a Swiss style (or other hand-shaded-like styles) shaded relief from a dem using ArcGIS tools alone?
7
votes
9answers
11k views
Is it possible to expose Google Maps as background map through ArcGIS server?
I am doing a (non commercial) project where the client doesn't have the budget for purchasing map data like that provided by TeleAtlas. They only need map data for a background map, and they'd like to ...
7
votes
4answers
103 views
How do you programmatically read the coordinate display format in ArcMap?
I'm looking for a property (or properties) that will give me the display units and the formatting.
I assume I need IMap.DistanceUnits but I can't find the formatting. Is this exposed?
I am also ...
7
votes
1answer
438 views
Advanced Polygon and Parcel Splitting
While I am still struggling to divide polygons into same sizes in ArcGIS (we are using ArcView 3.0 scripts now which work fine), I now have an even much more complicated problem:
I would like to ...
7
votes
1answer
752 views
How to get ArcGIS Templates in VS2010
I have a work computer which has ArcGIS desktop installed first and then VS2010 (just the way IT does it) and then templates are not available, anyone know what I need to do to see the templates?
I ...
7
votes
1answer
820 views
Edit End Points in Polyline (Python/ArcMap10)
I am trying to make a polyline endpoint snapping tool in python. using a Search Cursor I read in the values to an array of line objects (which contain the feature id of the line, and two "EndPoint" ...
7
votes
1answer
323 views
How can I use an ArcGIS.com map that's not shared with everyone from JavaScript API?
I like to use the ArcGIS.com to create a map with operational layers on top of a baselayer. I would like to have the Content and Map as private but to show the map in an application built with ...
7
votes
1answer
257 views
Running ArcGIS 10.0 Under Virtualenv
I am working on a Python package that has a mixture of command line tools and ArcToolbox tools. For Python development it is really useful to use VirtualEnv, especially when working with installers. ...
7
votes
3answers
500 views
Counting points along a polyline at a given distance of every 40 Ft
I've got a polyline representing a pipeline and have a pig run that has metal loss. I am going to create a points shapefile in ArcMap 9.3.1 of the metal loss locations along the pipeline but want to ...
7
votes
2answers
780 views
Poor image quality of raster pyramid files in ArcGIS (no anti-aliasing)
There are several GeoTIFF files (size ~7000x7000 px) which I try to open in ArcGIS Desktop 10.0. I have already created raster pyramids for them (.ovr files) using geoprocessing tool but their quality ...
7
votes
3answers
1k views
ArcSDE - Is there an automated way of releasing all layers locks?
We have an issue where users do not close ArcGIS and layers get locked, and sometimes this affects our nightly updates for some of the layers. I know you can individually remove a lock using the ...
