Tagged Questions
0
votes
3answers
38 views
How to compare differences in two shapefiles? [duplicate]
I am a new user to Arcmap 10. I've been trying to figure out how to compare two polygon shapefiles. I need to figure out what the difference is from 2007 - 2013 (increase/decrease) in a couple of ...
3
votes
2answers
75 views
How to calculate the shared area between a raster and a shape file in ArcGIS 10?
I have a raster file with 5 classifications developed from habitat modelling algorithms. I'd like to know how much of 2 classes of the raster is covered by the network of protected areas (Shape file). ...
1
vote
1answer
127 views
Why does Add Field to Layer File give “ERROR 000840: The value is not a Feature Layer”?
I'm trying to add a field to a layer file, but it always gives an error. What I did was making a closest facility layer and save the result as a layer and after that I tried to add a field, but then ...
2
votes
2answers
168 views
How to overwrite a Shapefile
I want to be able to overwrite a shapefile if it exists. I think my code needs some tweaking. I am using v10. I am able to delete the actual .shp file but the .dbf, .shx, etc still remain, so if I try ...
4
votes
4answers
297 views
Updating 30 Shapefiles, adding attribute and populating based on data
I need to add an attribute to each shapefile attribute table in ArcMap, I was thinking to do it in SQL, but I'm not sure how to go about doing it since I'm very new to ArcMap.
Can someone explain to ...
3
votes
0answers
172 views
How to create Relationship Classes successfully
I'm new to ArcGis and I'm making the first steps at this time. At the moment I've two different shape files. The first shape file represents streets on a map with some detailed information in the ...
4
votes
2answers
140 views
Easiest way to create measured intervals between shape points
I need to import a scanned photo of the outcrop (geology project) and re-create the grid from which i took plug data- each plug point will be drawn as a shape point file. The plugs were taken on a ...
3
votes
1answer
421 views
Creating Isolines from point Data
I'm quite new with ArcGis 10 so I’m having difficulties with something that may be simple to some. Anyway I have a list of bores that I’ve plotted using coordinates. Now I need to draw a single ...
7
votes
1answer
161 views
Determine minimum number of polygons from shapefile to cover an area of interest
I have a large number shapefiles representing areas of interest for an analysis that will be conducted using various sources of satellite imagery (IKONOS, RapidEye, etc.). Unfortunately, the imagery ...
5
votes
1answer
775 views
Use python to add layers to TOC
I've been battling with adding layers to the TOC for some time now. I have managed to single layers added but need to loop through a folder and add all layers. Shapefiles I cannot get to add at all. ...
5
votes
4answers
2k views
Why can't I export XY data to a shapefile?
I have added a table from Access to ArcMap, and then used 'Display XY data' to plot points. When I then try to export the Events to a shapefile I get an error message telling me:
"Error exporting ...
2
votes
1answer
225 views
How to meassure the length of common edges between polygons?
I have a shapefile that contains several polygons which in fact represent the limits of several counties. My task is to find each length of each shared border. So in other words I want to know how ...
3
votes
3answers
273 views
Add date to feature class name?
I still working on my big project, big at least for me, but I am currently stuck on this:
I have a lots of .shp, that I want to move to a gdb. While creating a feature class, I want
to add date ...
4
votes
3answers
1k views
How do I include a variable in the where clause of arcpy.Select_analysis?
I am trying to loop through a shapefile, selecting each feature in turn and copying it to a temporary shapefile to by included in a union analysis. I'm using a cursor to find the ID name for each ...
4
votes
1answer
1k views
How to programmatically add shapefile to data frame in Arcmap
I have a toolbox with python script which creates a shapefile from JSON txt file, but it does not show the generated shapefile in arcmap, i have to add it from the output location. What code shall I ...
2
votes
1answer
373 views
Why does aggregate polygons consistently error out?
I'm using aggregate polygons on a dataset with three large study areas. It did not work. So I split it into separate areas and did it again. Two of the three areas (which were smaller than the third) ...
2
votes
1answer
276 views
coordinates in dbf file wrong
I am new to ArcGis, so please bare with me :D .
I converted a polygon in an mdx file I have to a shape file, then converted its vertices to points, then used "add X Y feature" and choosed coordinates ...
2
votes
1answer
269 views
ArcMap v10 - Polygon Layer - Keeping one polygon above another
I have a shapefile with polygons of differing colors. I am using a white hash pattern to represent partial ownership.
In short - Polygon #1 is Green and Polygon #2 is a White Hash pattern.
...
0
votes
2answers
1k views
How to import data from excel and associate it with individual shapes?
New user on ArcMap - Working with shapefiles...
Question: the shapefile I am working on, a polygon is a plot of land, each plot of land has a history of owners. I am currently having to copy/paste ...
4
votes
2answers
171 views
Append Point Shapefile Location by GPS'd text file
In my industry it is common to create preliminary design maps for point locations that have a unique identifier. Upon the actual construction on the design, points change location based on ...
8
votes
3answers
4k views
How to create a shapefile in ArcGIS 10 using arcpy?
How can I create a shapefile using Python in ArcGIS 10?
I have lat & long. From this I need Python code which will create a shapefile and display it in ArcGIS 10.
Thanks.
2
votes
1answer
274 views
Why does this python function return a value of 0 in field calculator?
I am trying to calculate the percentage of a total which the median value makes. I have a column with the median column labelled (i.e. 1st,2nd,3rd,4th column is median), the columns of values and the ...
0
votes
1answer
195 views
Why does collapse dualline to centreline only create an outline of the dataset?
I'm trying to collapse all divided roads in one centreline and to integrate any other spurs or errors in the dataset to create one set of centrelines. I have used Merge Divided Roads but it leaves a ...
9
votes
5answers
3k views
ArcGIS 10 creating a shape file from current dataframe extents in layout view
Where is the tool for this?
Have looked around and the closet thing i can find is Toolbox's Grid/Strip Map Index tools under Data Drive Pages.
I just want to be able to create a single polygon ...
1
vote
0answers
231 views
Convert FeatureLayerClass to shape file error : Item not found in collection
so following this link
http://edndoc.esri.com/arcobjects/9.2/NET/91e3e8a0-d355-43d2-a201-0a8ceb719334.htm
I am able to convert my featureLayer into a shape file and export it.
However, some how for ...
5
votes
5answers
2k views
How can one execute an SQL script in field calculator in ArcGIS 10?
I am trying to transfer over row data from a table to columns in a shapefile table. There is a common "SA" variable between the two (i.e. the study area number) but there is more than one land use ...
5
votes
2answers
793 views
Why is the dynamic text on data driven pages not displaying a value from the grid attribute table?
Relating to my question here, I've been trying to return a value from the attribute table using the following code:
<dyn type="page" property="lu1p"/>
However, even if I try to use a ...
5
votes
3answers
1k views
Why doesn't the split tool return any records in the attribute table?
I've been trying to split a large land use shapefile using a set of study area polygons as the split feature, but when the function finally finishes running (the land use dataset is quite large), all ...
1
vote
1answer
78 views
Online resources for creating shp files performing basic GI functionality
I am looking to build polygons, based on files containing a grid of points. The representation of the polygon would be an aggregation of the points. As the end wares are ESRI, I was wondering if ...
2
votes
0answers
419 views
Adding shapefile causes ArcMap Drawing Errors (General function failure)
I am creating a map that is a hodgepodge of databases, stand alone shapefiles, and a couple image services. Everything seems to go as expected until I add a certain shapefile to the mix. Then all of ...
3
votes
2answers
237 views
Programmatically reordering ArcGIS layers
I programmatically create several layers for my map and I want my layers to be on top of the layers from the original map.
Is there a way I can do that? I also want to be able to put "bring ...
4
votes
3answers
717 views
Looking for a way to change the default shape file label in ArcGIS 10
Is there a way to change ArcGIS's default shapefile label Font: Aerial Size: 8 to something we are using over and over again? As shown in attached screen shot, i'd like to include a label expression ...
6
votes
1answer
1k views
Updating Lat/Longs and actual position of point shapefile
Greetings everyone, quick question regarding lat/longs and updating a point features actual location. I have a point shapefile with over 3000 points that are updated frequently, when they are updated ...
