ArcMap is the main application of ArcGIS for Desktop and the tag for that (arcgis-desktop) should normally be used in preference

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19
votes
3answers
4k views

Optimal video cards for GIS programs

I recently purchased a Dell XPS-8300 (i7-2600|16 GB DDR3 RAM|64-bit Windows7) which I intend to use primarily for GIS programs. I bought a refurbished model because it was much cheaper and because I ...
7
votes
1answer
2k views

Permanently Change ArcMap's “Maximum Sample Size” Setting?

I've lately been working on feature classes with a huge number of polygons (e.g. all of the Census blocks within the Chicago metro area). I've been needing to symbolize them by quantities a fair ...
8
votes
4answers
9k views

How do I change the data source for all layers in an MXD?

I have an MXD. It connects to about 30 layers in one of our SDE databases. I want to change the SDE database they connect to. Is there a way to do this without having to right-click every layer and ...
4
votes
1answer
290 views

Projecting gps data to get length of resulting line shape in ArcMap 10.0

I have gps data in WGS84 geographic coordinates. I will use the gps data to build a line shape in ArcMap 10.0. The data falls in UTM 15N. To get most accurate length of line, should I project the ...
0
votes
1answer
199 views

Can ArcMap automatically highlight an object on the map its label?

I was wondering if there is a way to highlight a feature (e.g. line) only by selecting its label on the map. Can ESRI autmatically highlight this object or do I need to create some "connection" ...
13
votes
5answers
2k views

Is Hillshade option in ArcMap rubbish or is it me?

Here is a pretty pic of the raster I am using - with no effects applied - just the color ramp and historgram adjusted to show out all the relief - all be it in a very 2D way! I have a raster layer ...
1
vote
1answer
329 views

How do I open mxd backup file?

How do I open a mxdbk file ? My ArcMap frozen and save the mxdbk files. I would like to know how to open them up rather having to re-do the work. Thanks !
4
votes
1answer
832 views

Can you use active layer as input for dynamic text?

I'm wondering if you can lift the name of a layer in the ToC (within a group) and use it in dynamic text. Is there existing syntax to do this? Perhaps ... <dyn type="ToC" ...
8
votes
3answers
3k views

How to round a column in attribute table (ArcMap)

I want to use the Field Calculator in ArcMap to round an existing column to two decimals. Currently I have a column that is 6 decimal places long and would like to simply round it down to 2 decimals. ...
3
votes
1answer
448 views

Batch clip feature class to preserve area field

I have a large land cover map in a geodatabase, that I want to batch clip by defined catchments (about 63 polygons). The output files are named based on a field in the "clipper" (sys.argv[2]) called ...
4
votes
1answer
467 views

What does “Size/Width” stand for in the symbol selector?

Can anyone explain how to interpret a symbol size of 10 or let's say 100? What kind of units are these? I ask because recently I had to deal with a reference scale and I wasn't really able to explain ...
-1
votes
2answers
1k views

Projecting data from WGS84 to NAD27 UTM BLM Foot ArcMap

When I use the NAD27 BLM 15N prj from the projected>>UTM>>north america>> in ArcMap 10.0 and go from WGS84 to that..using the NAD_27_To_WGS_84_1 transformation..my resulting shapefile doesn't line up ...
1
vote
1answer
207 views

Modifying a projection ArcMap 10.0 Arcpy

I have the need to project data from wgs84 to UTM 15N NAD1927 FOOT_US. I would like to have arcpy do this for me. I can project the data using one of ArcMaps predifined prj files in the Coordinates ...
1
vote
1answer
452 views

How can I add the frequency (count) of a point shape file on an animated map?

The problem is this: I have a crime (point) data on a map which is animated via time slider using a 1-week-period. I see all the points I added without a problem, I also added a dynamic text ...
1
vote
2answers
445 views

ArcMap 10 How to create a tool to use with a Vb.Net script?

I have a VB.net scrip that I would like to run from the toolbar. In VBA, you would create a buttton that would collect the xy coordinates and pass the variables to the script for running. I can't ...
9
votes
3answers
3k views

How much RAM can ArcMap use?

I am exporting 36"x48" label intensive maps as PDF. For urban areas, ArcMap 10 hangs or kicks back an error saying it could not complete the operation. I have a quad processor with 4 GB ram. I also ...
0
votes
2answers
692 views

How to create custom Identify tool for ArcMap 10 and ArcExplorer

I need to create an identify tool that will return text attributes arranged in a graphical form. The scenario is there are text attributes for signs and they need to be displayed just like they would ...
6
votes
1answer
2k views

Geometry from multiple selected features into one geometry

Lets see if I can explain what I'm trying to do. First of all I have developed an AddIn for ArcMap that can take one selected feature (Polygon) on a layer, grab the geometry of that feature, and save ...
2
votes
1answer
975 views

create border and labels for groups of features in arcmap

I am relatively new to GIS, so please bear with me if my question is a basic one. I have a simple map of the parishes (counties) in Louisiana, and each of the parishes has an associated regional ...
2
votes
1answer
930 views

Why is an XML file with the same name being created when I save an MXD?

In the last couple of days, everytime I save an mxd file an xml file is created with an identical file name (obviously with .xml rather than .mxd at the end) in the same folder that I've saved the mxd ...
2
votes
2answers
127 views

Finding Two locations with a conditional search on DEM

I want to find two locations H difference in elevation between two locations on a DEM. Ex: point A and B are my output after search on DEM. conditions are (1)buffer R distance around point A and (2) ...
3
votes
2answers
3k views

How do you add file name to an attribute field?

Does anybody know how to add the shape file name to a field in the file's attribute table? I've found a description: 'You have to use inline variable in CalculateField like %Name% in expresssion ...
7
votes
1answer
903 views

Inserting newlines in Rectangle Text elements via ArcPy causes overlap?

I ran across an issue the other day when I tried to use ArcPython's mapping module to edit rectangle text elements with newlines (\n) in an ArcMap document. Here's what the output looked like: ...
11
votes
3answers
725 views

Which data format typically displays fastest in ArcMap?

My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was ...
14
votes
3answers
2k views

Producing building shadows?

How would you generate building shadows from building footprints? I have attribute values for the heights of buildings. So would preferably like to have the shadows' sizes vary based on that. The best ...
0
votes
1answer
283 views

ArcGIS 10 IGPFunction2 and IGPFunctionFactory Implementation

I'm creating a custom ArcToolbox tool in C# .NET in ArcGIS 10 SP2. Though I seem to be having two issues which maybe related: Firstly, my tool is run as a background task i.e. the GP dialog does not ...
7
votes
1answer
1k 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" ...
3
votes
1answer
852 views

Measuring distance between points along a river system

I have a forked river with multiple x,y data points along it and I need to measure the distance between these points when travelling along the river. However the forked part is throwing a wrench into ...
4
votes
2answers
6k views

Using ArcMap, how may I convert a shapefile to use decimal degrees?

I have a shapefile that currently uses meters as the measure for its coordinate system, but the map framework I wish to use expects decimal degrees. I'd like to reproject my shapefile to use decimal ...
3
votes
2answers
4k views

How to sort a feature class and then calculate a sequential ID field?

I am in ArcMap and I want to sort the records based on a field and then do a Calculate Field with an auto-incrementing value with the sort in-place. Any ideas? It looks like I could get an update ...
7
votes
4answers
5k views

How can I export raster data from Arcmap to an R *.grd file format?

I want to work with raster data in R, but I have problems exporting my raster dataset from ArcMap. By "export data"/GRID I get a file with an *.aux extension. What I need is *.grd. Can anybody help ...
1
vote
0answers
62 views

Finding two locations with H elevation difference on a DEM [duplicate]

Possible Duplicate: Volume of water in a basin with reference to incremental height of DAM I want to find two locations on a DEM with any specified H elevation difference. I want to see ...
0
votes
1answer
223 views

How to get multiple SLD files of the same shapefile?

I need to get multiple SLD files for the same shapefile. Geometry is polygons, and they need to be colored by one attribute column. What is the best solution? I'm working with ArcMap2SLD or ArcMap to ...
10
votes
1answer
754 views

Programmatically determine ArcGIS Layer(*.lyr) file version

I've been through IStorage, Microsoft Compound File Spec, ArcObjects deserialization etc. trying to detect the .lyr file version. Using ArcObjects, I can get at the Layer properties, data source, ...
5
votes
1answer
1k views

Arcmap: save all layers in Table of Contents to layer files

Using python, how can one save all layers in the Arcmap (v10) table of contents pane to layer files on disk?
18
votes
8answers
14k views

What is the simplest method to add GPX files into Arcmap?

What is the smoothest route, the easiest user experience, to add gpx files to Arcmap? (update) Basically, ideally, I'd like to interact with .gpx with the same facility as .shp, being able ...
4
votes
2answers
192 views

How to determine flow amount along a stream using ArcGIS 9.2?

I have DEM with resolution 20m and also stream network map in shape format, isohyetal map in shape format. I have also historic numerical data for rainfall, runoff and temperature from 1970-2000 for ...
6
votes
2answers
3k views

How to calculate a field in ArcGIS using Python?

I'm trying to calculate a field based on the values of others in the same layer in a calculation. I can't work out why its not working. I've even cut everything down to just be based on one field and ...
5
votes
2answers
374 views

ArcObjects Class Extension - core events not being fired by an editing tool

I think I've just hit a major limitation with how ArcMap (10) deals with class extensions on a Feature Class but I would first like to make sure I'm not missing something or seeing a bug. I have a ...
3
votes
1answer
2k views

update a field based on another field in python

I need to update a field based on another layers field. I could do this in arcmap manually by joining the two layers together and then using field calculator. Is there a way I can do it with a script? ...
3
votes
1answer
355 views

Splitting raster pixels by a polygon's edge?

I have a a polygon shapefile of different regions, and a raster grid of precip data. I want to take the polygon and add up all the raster precip data in each zone. I could use zonal statistics to do ...
1
vote
1answer
404 views

10.1 beta - register dll-s

I just tried to register my extension for ArcGIS 10 in the 10.1 beta and it failed when I tried to register the dll: "Could not load file or assembly 'ESRI.ArcGIS.ADF.Local' Version=10.0.0.0." Do I ...
1
vote
1answer
229 views

Dynamic defining of transformation type for ISpatialReferenceFactory.CreateGeoTransformation call

Suppose given a point (IPoint) in some coordinate system. Required to transform it to another coordinate system. If both of coordinate systems are predefined, we can use IGeometry2.ProjectEx with ...
6
votes
2answers
852 views

Shortcut to copy current cursor coordinates in ArcMap

Is there a shortcut or an extension to ArcMap 10 that would allow me to quickly copy (to clipboard) the coordinates at the current map position/click? I could implement such a functionality easily ...
2
votes
2answers
652 views

How to set right coordinate system?

I have shapefile (points) which I got from adding xy data in ArcMap from Excel table. I had Latitude/Longitude data. It is area of northern Australia. For example (5 points): Longitude 136.882 ...
1
vote
1answer
109 views

For ArcGIS tool can Illustration of Item Description be used as Thumbnail in Contents of Catalog window?

I've made a Python script tool using ArcGIS Desktop 10.0 SP2 and have accessed its Item Description to Update its Illustration by browsing to a *.png file. The expected Illustration then appears in ...
5
votes
5answers
2k views

Volume of water in basin with reference to incremental height of DAM?

I have a DEM of my area. I did watershed analysis with Arc Hydro. I want to calculate "Volume of water in a basin with reference to incremental height of DAM" Is there any method, tool to give ...
4
votes
1answer
337 views

How do I display null data in a choropleth?

I am working in ArcMap and I have created a choropleth map (using a "population" attribute) that is rendering things basically correct except that when the "population" attribute is null, representing ...
6
votes
2answers
2k views

How to determine elevation drop along a stream with ArcGIS?

I need to calculate(estimate) hydraulic head(elevation drop) along a single river stream in order to find potential site for small hydropower plant. I have a DEM with 20m resolution and raster and ...
3
votes
1answer
350 views

GWR and OLS regression models

I'm somewhat confused about regression models. I decided to create a GWR model for a project using 35 polygons of health data. However I find now that my model has flaws and I cannot create a GWR ...