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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How to use consistent symbology between multiple stretched rasters in ArcMap?

I have a series of continuous rasters representing the same phenomenon over time, so I need to use the same symbology across them all. So I set the stretched symbology of the first raster, with a ...
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1answer
873 views

What type of kernel density function does ArcMap use?

I know that there are several types of kernel density functions, such as uniform, cosine, Gaussian, etc. I was just wondering which one the "Kernel Density" functionality in ArcMap 10's Spatial ...
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8k views

How to create a button in Arcmap 10 to run a Python program?

I have a script that I want to run within ArcMap when a button in a toolbar is clicked, and so far I have only been able to make the script into a script tool. I need it to run as a command, not as a ...
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5answers
3k views

How to get the envelope of all the features in a feature class in Arcmap?

I would like to get a single envelope of all the features in a feature class. Is there any way to do that in ArcMap?
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ArcObjects (ArcGIS for Desktop and C#): How to cast between the ArcMap COM UI and my custom .Net UserControl objects?

I'm creating a utility to run in ArcGIS for Desktop using ArcObjects (9.3.1 SDK) and C#.Net. My prototype involves a toolbar with two comboboxes and a tool. The first combo selects a layer in the TOC, ...
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1answer
204 views

What's the ArcObjects equivalent to ArcMap's Flip button

In an ArcMap extension, I need to flip multiple lines from a selection. The ArcMap Flip button only allow to flip one feature at a time. What's the ArcObjects equibalent to the ArcMap's flip button? ...
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947 views

How to identify “true arcs” in Arcmap?

This is really annoying: the only good way of creating circles in ArcMap is using true arc, (compound curves) but I need to convert those to vertex (densifying) because of a compatibility problem. I ...
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701 views

How to extract the number of vertices in each polygon?

I have ArcGIS Desktop 10.2 and my challenge is how to extract the of number vertices in each polygon for all features like this: I have many parcels in my feature class and I want to extract ...
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Open source software to merge large shape files

Some background: I have 2 polygon shape files with approximately 500,000 records each. The two files are identical in terms of field structure. Using ArcGIS 10.0 I can'nt merge these two files using ...
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1answer
4k views

How to choose selectable layers in ArcMap 10?

Maybe I'm missing something, but I cannot figure out how to toggle selectable layers in ArcMap 10. In 9.3, I remember being able to choose from a list which layers I wanted to be able to select ...
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5answers
10k views

I am struggling to convert .dwg to .shp, ideas?

Any ideas as to how can I convert dwg to shp? I tried Kosmo and gvSIG. gvSIG kind of worked but it seems like I lost information.. in addition everything was converted into lines, no polygons. I can ...
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1answer
2k views

How to create sidebar help information for custom arcgis script tools?

I have been creating custom gis tools with python via the arcpy module. I can set up the tool successfully with parameters and all, but I cannot figure out how to create help text that shows up on ...
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Label Expressions to replace null values with text not in feature class

I need to label some hydrants (points) - some of these belong to the fire brigade and have a number assigned to them, some do not and thus do not have a number. I would like to write an expression ...
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2answers
3k views

How to reverse geocode with ArcMap?

What steps to I have to take in ArcMap (ArcEditor) to input a lat / long and return nearest address? I found the Reverse Geocode tool but I can't figure out what to put in the "Input Features" and ...
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2answers
3k views

How to create a checkbox parameter in a ArcGIS custom Python tool?

I am working on creating an ArcGIS tool from a Python script I am writing. I am wondering if it is possible to have a checkbox parameter. Basically what I want to do is have a parameter where the ...
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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 ...
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3answers
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Change the symbol scale in ArcMap legends

As you can see from the image below, my enormous scale for traffic pattern shadows the other objects in the legend. Are there ways to reduce the size of object portrayed in the scale?
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514 views

How to determine projection parameters when customizing a projection

I am trying to customize an Albers and a Hotine Oblique Mercator (HOM) projection to minimuze distortion in the region I am analyzing. The region extends from about 51 to 62 degrees latitude, covering ...
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2k views

Cartographic techniques for symbolizing routing data

Some common problems with displaying routes created from street data, such as bus routes, include: Routes may overlap themselves, such as when a route takes the same road in opposite directions ...
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361 views

Can I have the “store relative pathnames to data sources” box checked as the default?

Is there a way to have the "store relative pathnames to data sources" box checked as the default rather than always having to go into the document properties and check the box? ArcMap 10.0.
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3answers
514 views

How stable is WPF in Arcmap?

I'm tempted to propose porting some windows forms based arcmap tools to WPF. Before doing that though, I'd like to hear from others who have done something similar, and what sorts of issues were ...
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3answers
436 views

Method to generate points in any projection

I am writing an application in ArcMap to generate a grid of points. These points have a very defined layout and I have worked out an algorithm that works great under a projected coordinate system. ...
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1answer
920 views

Difference between Heat Map and Hot Spot Analysis?

What is the difference between "Heat Map Analysis" and "Hot Spot Analysis"? Are we perhaps using hot spot analysis to get the required relations between features, and then using the results as an ...
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1answer
1k views

How can I auto-increment output file-names in Toolbox ESRI ArcMap 10

I have a simple tool which outputs a file. I would like the filename to be a number which increments every time the tool is run. How would I go about implementing this using the toolbox in ESRI ...
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756 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 ...
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1k views

Change from layout view to data view using python? (ArcMap 10)

Is there a way to change from layout view to data view using python? I would prefer to do it using arcpy.
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162 views

How to display nebulous boundaries between regions with indistinct edges?

I'm trying to map the boundaries between regions which don't necessarily have a hard edge. For example, areas where languages predominate don't have a distinct edge, but instead have a degree of ...
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1answer
904 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: ...
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1answer
666 views

Is there a way to show a layers feature count in the TOC?

I'm using ArcGIS 10. In ArcMap's table of contents (TOC), is there a way to have the "Layer Name" automatically show a count of the total number of features in each layer? I was thinking the TOC ...
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1answer
634 views

Label legend interval with number of elements - ArcMap 10

I have made a series of choropleth maps in ArcMap 10. When I classify the interval the bottom of the dialogue tells how many elements are in the class. Is it possible to have this number ...
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3answers
1k views

Use buffer tool to draw different radii?

I am new to Arcmap-Arceditor 10 and could really use your help. I have been mapping ethanol plants (which utilize corn to produce ethanol) and corn production amounts in the counties of the USA. ...
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1answer
134 views

Merging Issues doubling up

I have two shapefiles with some of the parcels (surveying) overlapping each other. How do you get those overlapping parcels from doubling up? Is there a way you can have it dissolved or union etc... ...
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1answer
1k views

How to disable and enable drawing in ArcMap using Python?

The script that I'm writing repositions two data frames and sets their extents. When doing this, it redraws the entire Active View 4 times, slowing the script substantially. Pressing F9 or ...
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140 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 ...
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4answers
920 views

How to force polygons to the bottom, without compromizing drawing speed?

I have a large polygon dataset and no time to rebuild it to regoranize the Object IDs. Many polygons are drawing above others, blocking their symbol (for example on one side of the polygon). I tried ...
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1answer
655 views

Why does ArcGIS copy & paste layer in a TOC sometimes change the Data Source of the layer?

I run into this situation all the time; I often just copy layers and groups of layers in the TOC of one Map Document and paste then into the TOC of another Map Document. For the most part this ...
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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" ...
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2answers
3k views

Select by Attributes based on SQL wildcard range

I want to select all the records from a geodatabase table where the string starts with a letter, so I tried SELECT * FROM tbl_names WHERE "name" LIKE '[A-Z]%' This returned no records. After some ...
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1answer
970 views

Coordinate grid display on a rotated map

I have a series of maps that require me to rotate my data frame within my layout screen (north "rarely" points up in these maps). I ONLY want to show east coordinates on the top/bottom and ONLY north ...
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1answer
1k views

How do I get the current Undo and Redo item in ArcMap Operation Stack?

I just posted this on ESRI forum and found this link so I am trying it here too: Research ArcGIS Resource Center document - How to work with the operation stack: ...
7
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1answer
611 views

How can I change the class of one pixel in a classified image?

I have a classified image (I did it in ERDAS) with six categories. There are some misclassified pixels (especially high-density urban category). Is there any way that I can choose one pixel and then ...
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1answer
2k views

Is there a way to add a PDF to ArcMap as data?

I receive a lot of PDF maps (vector, image, with georeference and without) and I am having to convert them to an image file before I can add them to ArcMap and georeference. I can't see any obvious ...
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3answers
241 views

How to improve positioning of images taken with GPS and Gyro info?

I'm sort of 'recreating' google street view with MIT right now. We have a car with a camera on top and we're driving at 10mph down a road. As we drive we're shooting pictures at 30fps and each photo ...
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1answer
1k views

automated georeferencing

I am attempting to fully automate the process of georeferencing a load of .png files - i have xml file containing the co-ordinates - but how can i use them? Does anyone have any advice?
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5answers
506 views

How to programatically identify the “Joined Field” in ArcMap?

Is it possible to programmatically identify the Join Field that is being used to Table Join two datasets together in ArcMap? I am currently using ArcGIS 10.0, SP5 and would prefer an ArcPy solution, ...
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1answer
671 views

In ESRI ArcMap, how do I refer to NaN or ±∞ (special floating point values) in definition queries?

I have by chance discovered how ESRI ArcMap displays special floating point values to the user. +∞ (positive infinity) is displayed as 1.#INF –∞ (negative infinity) would supposedly be displayed as ...
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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 ...
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4answers
5k views

How to change the order of features in a shapefile?

I have a shapefile and I want to change the order of the features. Is that possible using ArcMap?
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1answer
520 views

ArcMap redraws every layer when changing just one

I have 10 layers or so loaded in a data frame in ArcMap 10.2. Some are complex such as NHD hydrology and Tiger roads. Why does ArcMap redraw all layers when I change the symbology of just one? Is ...
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3answers
1k views

How to digitize a raster automatically

I have a raster (.sid extension) file. I want to digitize roads automatically in ArcMap, QGIS..etc. Digitizing by hand would be too time consuming. How can i do this ? Thanks