Tagged Questions

A tabular set of data linked one-to-one to a set of spatial features.

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0
votes
1answer
33 views

How to re-calculate area, perim, p2a,width and length in QGIS?

I cut a part out of one feature and added it to another feature in a polygon shapefile. My problem now is that both features has the same values in the area-, perim-, p2a-, width- and length-columns? ...
0
votes
0answers
30 views

how to join shape files and 2 attribute tables with similar data in it without replicating them in qgis [closed]

pls help..!!! as Iam working for a college project in a group where all the group mates have created similar type of map in diff shape files, now we need to merge them. But the tables are replicating. ...
3
votes
2answers
63 views

How to store data from ArcGIS layer in SQL Server?

I'm new to ArcGIS and I want to know if I can store data from a layer to a SQL Server table and if we can do this, then how? I have already made a connection between ArcGIS and SQL Server.
0
votes
1answer
44 views

Join Fields from Multiple Tables to One Table in Modelbuilder

I have 40 tables with about 2000 row with a shared ID that I want to merge into 1 table with 2000 rows. I only want to retain a distance field calculated within each table. The distance field is ...
0
votes
0answers
30 views

How to take point data from a network and input it as TO/FROM endpoint data in streets layer?

I am building a network of my city's roads in ArcMap 10.1. Right now I have three layers: 1) Streets_To-From (lines representing the southbound and westbound sides of every road and one-way streets ...
1
vote
0answers
52 views

Can't order/sort String columns in ArcMap attribute table

I am new to this site as a registered user and new to GIS in general, and it has proven quite useful to me. I have a very annoying problem with the attribute table being filled by an ArcMap ...
1
vote
2answers
67 views

Help excel table not transferring to Arc correctly!

New to GIS and Ive been trying to figure this out for a while. I have an excel sheet with CT names such as 0128.03, 0128.04, starting from 0001.00 and up. Not all CTs have .01, .02 at the end just ...
1
vote
0answers
44 views

Trigger to fill attributes (data, client ip) in table for each new objects, PostGIS

In PostgreSQL/PostGIS database stores shapefiles. Client users software - QGIS. Please help me write PostgreSQL/PostGIS trigger, which for each newly added/updated feature in layer added 'time create' ...
2
votes
1answer
59 views

How to split single lines to represent two-way streets?

I am working on a project using city road data. The data has every road in the city visualized as lines and with directional data stored in the attribute table (one-way to-from, one-way from-to, and ...
0
votes
1answer
25 views

How to hide/suppress and rename/alias fields when exporting to KML?

I have a feature class that needs to be exported to a KML file. I wonder if there is a way for me to export only some of the columns of the feature class's attribute table; some attributes are not ...
0
votes
0answers
27 views

GRASS - Creating an Attribute Based on Driving Distance

Is it possible to calculate the driving distance for each node of one layer (fire stations) to each node of another (address points)? After doing so, I need to sort all of the distances from shortest ...
3
votes
2answers
67 views

Select by Attributes (features sharing a common attribute value)

I am attempting to 'select by attributes' a point feature with the lowest numeric value which shares a common value with other point features in another field. For example: I may have 3 point features ...
0
votes
3answers
51 views

Exporting the contents of an attribute table in formats other than an Excel file

I know that it's possible to export the contents of an attribute table to an Excel file, but could they be exported in any other format (from ArcGIS 10.0)? I have a feature class whose attribute table ...
1
vote
1answer
99 views

Editing attribute tables using Python

I am new to Python, so sorry for such a trivial question. There is a shapefile (let's call it Structures.shp) and the script I'm writing needs to update the value of only one record in only one field ...
3
votes
2answers
77 views

Does QGIS support internationalization?

Does QGIS support multiple languages? I have some shapefile with Arabic names in its attributes, and they appear as: ???? If I want to see the names in Arabic, do I need to purchase multi-language ...
2
votes
1answer
133 views

ArcMap - Opening the attribute table gives 'Could not load data from the data source' error

ArcMap wont display the attribute table of a dataset. I get an error 'Could not load data from the data source' and it says 'An invalid SQL statement was used'. It then opens a table with the correct ...
5
votes
2answers
111 views

Sort a feature table by geographic location

Here's in interesting challenge: I need to embed a table in a map layout so that the records in the table are sorted according to their geographic position on the ground. For example, in a ...
6
votes
2answers
136 views

Refresh open attribute table in ArcMap (arcpy)

I am running the Calculate Field GP tool from the arcpy in ArcMap. When a row value is updated, it does not show up untill I use the Reload Cache tool (Table Options > Reload Cache). How do I refresh ...
0
votes
0answers
37 views

ArcGIS 10 reports with map and data table

HI wonder if anyone knows how to automate a report showing parcel information along with an inset map on the same page. I have access to ArcGIS 10. thanks
1
vote
1answer
62 views

arcpy: can I use SelectLayerByAttribute to compare fields from joined tables?

I can't figure out the syntax to select table records where one field's value exceeds that of another. The fields are from a pair of table views connected w/AddJoin(). One view is of a fgdb table and ...
4
votes
0answers
55 views

Is there an Attribute Table Feature limit?

I am copying a table with 11,000+ features but only about 700 show up on the QGIS attribute table. Is there a limit? how can I avoid this problem? Thank You in advance!
2
votes
1answer
33 views

Clipping a buffer from network analyst shapefile to a base shapefile

I have exported my polygon shapefile which I got after I ran my Network Analyst into a shapefile. It has 6 buffer zones (delimited by time in increments of 10 minutes). When I check the attribute ...
1
vote
1answer
144 views

How do you parse an HTML formatted attribute value to seperate columns in a database table?

All, I have an attribute field formatted using HTML all ready to go for google earth markers. The KML in question is here: http://dl.dropbox.com/u/95231813/state_pts_MI.kml Here is the value: ...
0
votes
1answer
50 views

Can you map with numbers and words in the same column?

I have a column in my .dbf file that is a mixture of gradually increasing numbers but also a word for all of the items that don't match the criteria, for example: **JUNIOR_PRI,N,4,2** 3.9 2.44 1.38 ...
2
votes
0answers
65 views

How to create raster attribute table to a raster data using gdal python?

I classified a remote sensing data and saved it as a raster using Gdal python. I want to create a raster attribute table for this classified result.. my classified raster has five classes with ...
0
votes
0answers
111 views

Select record from table attributes in QGIS and Python

Can anyone tell how I can access to the attribute table of a shp and select a record from a specific row and column using Python (with console or a script). I've been looking for in the qgis API, but ...
8
votes
1answer
243 views

Fastest methods for modifying attribute tables with Python?

A while ago, I wrote a quick Python function for converting an attribute table to a python dictionary, where the key is taken from a user-specified unique ID field (typically the OID field). ...
0
votes
1answer
145 views

Model Builder - iterate through columns in a table

This seems like it should be a no-brainer, but I am unable to find any info on how to use model builder to run a certain spatial analysis function on each column in a table. Problem: I have a table ...
2
votes
1answer
157 views

Using the Field Calculator in a Domain field

I have a coded domain field with 10 dropdown options. Possible choices include integers and text. I need to change a selection of 250 features (which have differing values) to the same value. This ...
1
vote
1answer
74 views

How to show attribute table of object when user clicks on it?

sorry if I'm asking stupid questions but I really spent days trying to figure out how to add functionality to my map so that when user clicks on some map object he gets the attribute table on the side ...
-3
votes
1answer
43 views

Attribute table field value question? [closed]

I have a field in my attribute table that is land ownership. That field is populated with all different types of ownership but there are redundencies that are just labled differently. Ex. Parks & ...
1
vote
2answers
67 views

Setting custom valid values to a MapInfo field?

I was wondering if it was possible in MapInfo to set valid values for a field, e.g a field called material and only valid values being BIT, CON or STO? I have a basic knowledge of MapBasic. Thanks, ...
1
vote
2answers
172 views

Get Number of Rows, ArcObjects (VBA 6.0)

I am sorry to bother with what may be an easy question for most of you but i am new to ArcObjects (VBA 6.0) in ArcMap (ArcGIS 10.0) and i am really struggling here. I am trying to count the number of ...
3
votes
3answers
179 views

Comparing table attributes in ArcGIS 10(ArcInfo)

I'd like to compare attributes of two point layers . the layers have some similar records and i try to find these . ArcGIS 10.1 has a tool to comparing attributes but i could'nt find any similar tools ...
3
votes
2answers
119 views

Total of attribute field of point layer per polygon layer

I have a polygon shapefile of many lakes, I also have a point shapefile of locations on those lakes where fish were caught. The point shapefile contains the attributes: Fisherman_iD, Fish_Caught, ...
4
votes
1answer
72 views

How do “join field” and “target field” work?

New user. This should be simple, but I can't figure out how to perform this basic join in QGIS. (It works in Cartographica.) My shapefile (IL_BNDY_County_Py) has two fields/columns in its attribute ...
0
votes
0answers
68 views

repeating records in attribute table

I have a point shapefile containing records of bird sightings with location, species and land cover type that has about 30,000 records. I noticed today that one record is repeated about 60 times, with ...
1
vote
1answer
164 views

How to assign new values to a raster attribute table - by comparing two fields?

I have created a new raster from two raster datasets using combine operation in ArcGIS. The new attribute table has two fields from the input rasters. What I need is, to compare these two fields and ...
2
votes
1answer
74 views

Updating and inserting a field within the same loop

I am working with an empty feature class where I am writing a script to create polylines within the featureclass and attach an associated text value with the polyline. I am using a for loop as noted ...
2
votes
1answer
175 views

ArcGIS 10.1: Subtype/Domain Functionality

Is there any way to create more complex conditional domains in a table than a single subtype and associated domains? I would like to get the same functionality that more than one subtype in a single ...
4
votes
4answers
301 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 ...
2
votes
2answers
211 views

Why are edits in shapefile table not saved?

I have created a shapefile (point data) and wish to change some parameters in the files table data. I can edit the data and see the coresponding change in my my symbology. However, when I save the ...
2
votes
1answer
137 views

How to delete row from attribute table on QGIS1.8.0

Is it possible to delete row from attribute table!? I can delete from selecting feature. I encountered invisible polygon. I could not select feature. Thus, I would like to know how to delete from ...
0
votes
1answer
98 views

How to create a dbf field with length > 254? [duplicate]

Is it possible to create a text field in a database table with a length that is greater than 254 characters? Using arcgis 10.1
2
votes
1answer
168 views

find polygon corner coordinates

I am trying to get the coordinates of each node of the polygon I create. I would like the attribute table to display the name of the polygon (ex. address) and then the coordinates of the nodes (ex. ...
0
votes
0answers
63 views

Using Unicode values in an attribute table and label expression

I'm playing with unicode values in ArcGIS. Basically, I am trying to set a field that will store unicode values. I found this scripting example to encode unicode values. import locale ...
4
votes
1answer
407 views

ArcMap tables - copying multiple horizontal cells between rows

I would like to be able to select a contiguous set of horizontal cells in a row, take a copy, then paste the values into another row at the same position in the same table. I do not want to copy all ...
1
vote
0answers
39 views

How do you convert an Imagine raster attribute value into the raster value?

I have a raster derived from image segments with row id as the value. I have an attribute in the attribute table which should be the raster value, "Standard deviation layer 5" (see image). How do I ...
2
votes
2answers
149 views

How to insert a quotation mark through the Field Calculator of attribute table of a Shapefile?

I have a shapefile of polylines with information of diameter. But the problem is that i didn't enter the inch sign(") with the values of diameter. What would be the solution that qutation mark would ...
3
votes
0answers
82 views

Build Raster Attribute Table with GDAL Utilities

Is there a way to build a raster attribute table using one of the GDAL utilities? I know you can view it using gdalinfo and I have successfully created one using Python, but it would be so much ...

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