0
votes
2answers
21 views

Editing blank feature class in ArcMap

I'll try to describe my problem the best I can. I'm very new to ArcGIS. I have a jpeg showing an old map of NYC zones. I was able to georeference this image with a shapefile of NYC blocks. I wish to ...
1
vote
2answers
143 views

Are British National Grid (BNG) 1km grid shapefiles displayed accurately in ArcMap?

I have downloaded the UK Ordinance Survey's 1km grids in shapefile format for ArcMap. If you need to download them to have a look first you can find them here look for link in the first Answer to the ...
0
votes
1answer
63 views

Creating a layer in arcmap by dragging a table from an OracleDB

I am working on a project for a client, they gave us some data from their oracleDB, and when I connect to it in arc map I can just drag and drop the tables from the catalog window into arcmap and they ...
1
vote
2answers
65 views

Perform “Add Join” on multiple tables ArcMap or R

The operation I want to perform is the Add join in ArcMap 10.0. It works perfectly when done with one file but I need to do it with a few hundreds tables. What I have is ONE shapefile with divisions, ...
1
vote
2answers
122 views

How to add shapefile as layer to map using Python and ArcPy?

I am working on an application and I am a beginner in Python :( I want to add a shapefile, the execution is successful and everything but no result appears on ArcMap, here is the code I use: import ...
0
votes
1answer
39 views

Opening many shape at the same time

It may seem like a simple question but I haven't found a solution. I have a structure of directories with many shapefiles inside. Is there a method to open all these shapefiles at the same time with ...
1
vote
2answers
140 views

Merge shapefiles

I am a new user of ArcMap. I have several shape files of various portions of the West coast of India (boundary and contour files). I need to combine all these files into one shape file so that I can ...
1
vote
3answers
331 views

Can I have two kinds of point geometry in a shapefile or I should create multipoint shapefiles?

Following my previous question, can I have a mixture of two kinds of geometry in a shapefile of type point. Just like I have about shapefiles of type polygon or I should always create a shapefile of ...
1
vote
2answers
315 views

How many interior and exterior rings can a polygon have in a standard ArcGIS shapefile?

working with GDAL/OGR library and studying these two slides about geometries and vector data in the OGR library: slide 1 slide 2 I found that a polygon can have an exterior ring and lots of ...
1
vote
4answers
87 views

Add only unique features from another shapefile

I've got a problem that I am sure at least one of you have dealt with. I'm new to a company that makes use of a rather large database of point data. For whatever reason, the woman who was here before ...
0
votes
3answers
183 views

Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile

I have a .jpg that is a highway that spans multiple towns, and a shapefile with boundaries of these towns. I have georeferenced the .jpg so that it is aligned with the shapefile of the towns. My ...
0
votes
1answer
202 views

When I export shapefiles from ArcMap 10 there appears to be no xml file created?

When I create shapefiles in ArcMap, be it by selecting certain features from existing data or creating new polygons/points/lines, I look in My Computer and see a dbf prj sbn and sbx file. These ...
2
votes
3answers
110 views

Breaking a continuous contour shapefile into smaller parts?

I created this contour shapefile and I need to break it into smaller parts so its better to manage. I also have a line shapefile of where I want the breaks. Is there a way to intersect and break them? ...
1
vote
3answers
140 views

Converting Categories to shapefiles [duplicate]

I have created 2 Categories in a feature using classification.Now how do I convert them into new shapefiles?
1
vote
0answers
82 views

Mapping between two different agencies roadway shapefiles of Las Vegas in ArcGIS

I have two roadway shapefiles of Vegas. But they do not overlap. One of the file has a certain shift from its exact location. Can anyone help me how can I move the location so that they overlap ...
2
votes
1answer
102 views

Case sensitive query of shapefile in ArcMap 10

I am an IT guy, not a GIS guy. What I know about how to use ArcMap 10 I learned from Google. It has served me well so far. Apparently what I'm wanting to do worked in version 9, but no longer does in ...
4
votes
2answers
838 views

How can I export data from a feature layer in ArcGis Server?

I'm using a public ArcGis server with some data I would like to export to shape or some other format. I know I can make a program (I'm a developer) that could query the server for all the features on ...
3
votes
1answer
492 views

Is there a recipe for large shape files to be used in an Android App?

I am very new to GIS and I am diving into cartography and mapping because of an Android App that I am currently developing. I want to display environmental data, more precisely noise pollution data on ...
1
vote
1answer
1k views

Drawing a Straight Line Between Two Polygons on a Map and Listing Which Polygons It Passes Through

I have a shapefile of United States counties. I have two counties that I would like to highlight. I would like to draw a straight line distance between them. By straight line, I mean, if you were ...
0
votes
1answer
127 views

overlay a county shapefiles for 2 different years [duplicate]

Possible Duplicate: overlay county shapefiles for 2 different years 2 down vote favorite I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay ...
3
votes
2answers
216 views

calculate coastline at risk

I have an idea of what I want to do but I don't know yet what tools will bring me there. I have administrative boundaries in one layer and coastline in another layer. The coastline is categorized in ...
3
votes
3answers
613 views

Unable to explode multipart polygon

I have a taxlot that is giving me troubles in a Union. When I try to run the union I get the tried and true ''Geometry is not M-Aware'' message. (there are no Polygon-M features). Based on readings ...
6
votes
1answer
439 views

overlay county shapefiles for 2 different years

I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay these two files so that they do the union and indicate the percentage of the land in 1880 that went ...
1
vote
3answers
3k views

Merging Two or More Layers

I am working with three clipped layers that are shown in the TOC. I created these layers from a large watershed shape-file. However, each clipped layer includes the layer before it and only expands on ...
4
votes
2answers
3k views

Arcpy - How do I specify the precision and scale of a new field?

I'm wanting to create a field with a maximum of 1 decimal place and then calculate a value into it: (I know that all my values are < 10) arcpy.AddField_management('C:/shapefile.shp', 'myField', ...
1
vote
3answers
680 views

Update shapefile data source with wildcard using python

I am attempting to update a layer's data source in Arcmap using python for lyr in arcpy.mapping.ListLayers(mxd, "*", df): if lyr.name == "project_whl": ...
4
votes
1answer
163 views

Arcmap: subset A.shp based on B.shp, then partially update B.shp

Okay, so I have 2 shapefiles: US states outline file (very coarse/simple outlines) Global Self-consistent Hierarchical High-resolution Shorelines, Level F (much finer spatial resolution) I am ...
9
votes
2answers
1k views

Shapefile to SVG with ArcMap (while retaining country attributes)

Does anybody know how to export the Natural Earth 1:110m shapefile to SVG with ArcMap while retaining the country attributes? From SVG I'm gonna try to convert it again over to RaphaelJS to achieve ...
4
votes
1answer
513 views

Calculation of average point distances from one another within a polygon grid

I am working with processed LiDAR data of forested areas in ArcMap 10, with various area based statistics extracted for each 30x30m polygon grid-cell in a shapefile. There are approximately 20,000 of ...
2
votes
0answers
76 views

Determine which points fall within a 3D polygon and export this subset to a flat file

I am working in ArcMap 10 and will have a 3D representation of a zone of transmission. I would like to determine which GPS points fall within this polygon and then export this subset out to a flat ...
0
votes
1answer
450 views

ArcGIS: Extracting data from large intersect dataset

I have a big dataset imported into ArcMap. For each point, I created a buffers of 200m. And I apply Intersect to all the buffers, resulting in a huge dataset of around 2183962 objects. Previously, I ...
2
votes
2answers
3k views

select column in csv file in Python

I would like to study a range of data using the same technique in ArcMAP (it will take too much time to do it one by one ;) !). I've been just recently playing with ArcMAP and Python (which can help ...
3
votes
3answers
4k views

How to extract latitude/longitude values for specific points from a shapefile?

I have obtained public crash data for the state of Minnesota. I would like to be able to programmatically extract the latitude/longitude of each crash using this data in combination with a series of ...
3
votes
1answer
2k 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 ...
10
votes
3answers
632 views

Which data format typically displays fastest? (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 taught ...
4
votes
2answers
5k 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 ...
2
votes
2answers
602 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 ...
4
votes
2answers
754 views

Kicking someone off a shapefile in ArcMap

I have ArcMap open, and someone else has the same shapefile open as me. How can I kick them off so that I can edit? I get the following error message: "Unable to save edits, cannot acquire a lock"
2
votes
0answers
818 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 ...
4
votes
4answers
4k 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?
7
votes
5answers
9k 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 ...
2
votes
1answer
613 views

I have several layers (polylines and polygons) that are of the same area but they don't overlap in ArcMap as they should, what do I do?

For my GIS project for my class, I have downloaded several vector layers from different websites (polyline of the continental divide, a boundary polygon of New Mexico, a rivers and water bodies layer ...