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

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QGIS Spatial Queries

I was wondering if I could do the following within QGIS: I want to update a column in my point layer with the attribute information from a specific column in a polygon layer - so I have a layer of ...
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136 views

How to add information to an attribute table?

I'm working with qgis 1.8.0 and did the following: 1.-Divided my shapefile into 830 features (small rectangles). 2.- Added to my shapefile several points containing weather information using the "add ...
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93 views

How do I add a lot of data to a shape file in QGis?

I have some nice shapefiles from Agesic in Uruguay, I need to add to them some information (not as shapefile) that I got from Dinamige to the attribute table. These institution are not the point, the ...
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1k views

ArcGIS Attribute table appears empty until features are selected

I have a multiple layers that show features in the data frame and the layers are editable and labeled, but when you open the attribute table for these layers, it's empty. The only way to get the ...
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285 views

How do I edit a shapefile DBF to repair an extra row?

Something got screwed up and now the rows of my DBF beyond #1210 are offset by one, meaning that each shape has the attributes that should be assigned to the next shape. If I were in a spreadsheet ...
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2answers
327 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? ...
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1answer
69 views

How to work around “OGR-failure while deleting field 13. Invalid field index”?

this post might be related to this one: QGIS Field Calculator Results Removed When Saving Edits But there is no suitable answer for me It is not allowed to ask another time in the other post I ...
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2answers
239 views

How do I gather X and Y co-ordinate data from a vector grid overlay in QGIS 1.8.0?

I have overlaid a 10m x 10m grid onto a UK Ordnance Survey raster map. I have set both raster and vector maps to the same CRS, (OSGB 1936 British National Grid; ESPG:27700). I have a csv file ...
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1answer
77 views

Why are attributes missing in overlay tab QGIS 1.8.0?

I want to add a diagram overlay onto a shapefile layer. When I look at the attribute table, all the correct columns are shown. However, when I open the layer property box, the attribute columns I want ...
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100 views

Can this compilation and display of species frequency data be improved? QGIS 1.8.0

As a newbie on QGIS, I would like to find out if the way I put a species frequency map together could be improved upon. I had to map the presence or absence of 7 plant species surveyed in 30 2m x 2m ...
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34 views

how to divide a Area shapefile into multiple segment, so that each segment will be a seperate feature in attribute table? [duplicate]

I'm very new to GIS, I'm using QGIS and here's what I want to do: I have a shapefile of an area . I want to divide that area into multiple segment (not grid), so that each segment will be a ...
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84 views

Table calculation in QGis

I have a shape file with the attribute "yield". I need to know the math difference between yield (id1) and yield (id2)...then yield (id2) and yield (id3) and so on... I hope you understand what I ...
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3k 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.
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1answer
125 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!
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165 views

Can i assign a list or array to IRowBuffer Row without Row.set_Value()?

Is it possible to assign a list or array to IRowBuffer Row? I have something like the following: I have a fields (list) with values and i have to fill a Row with that values. public void ...
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299 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 ...
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94 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 ...
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307 views

Morphometric and hydrological analysis with Python and ArcGIS

How can I write a program using python, that calculates some morphometric and drainage indexes using numeric attributes in the attribute table with ArcGIS? The data I have in my table are area and ...
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1answer
208 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 ...
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1answer
220 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 ...
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1answer
2k 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 ...
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3answers
225 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 ...
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2answers
991 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 ...
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552 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
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1answer
5k views

Select all “NULL” values in the attribute table?

I have a quite simple syntax question. I want to select ALL my null values in an attribute table of a feature class, not just the values in a single field. So the question would be: what is the ...
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313 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 ...
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2answers
715 views

ArcGIS Attribute Assistant method not working

I don't know how many of you are using Attribute Assistant for ArcGIS 10.1, hope many:) I have some difficulties with a couple of methods. Well, I got the INTERSECTING_EDGE, the GENERATE_ID, and a ...
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1answer
82 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 ...
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1answer
243 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: ...
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1answer
260 views

v.dissolve renames the attribute table column and does not produce a dbf

When I run v.dissolve on my vector... v.dissolve --o input=pass2@mapset1 layer=1 column=fttcp output=pass3 The dissolving appears to work but the column name in the attribute table has changed from ...
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1answer
70 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 & ...
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56 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 ...
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1answer
766 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 ...
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374 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
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1answer
726 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). ...
3
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1answer
2k 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 ...
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2answers
403 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, ...
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2answers
1k 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 ...
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3answers
2k 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 ...
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2answers
2k 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, ...
5
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1answer
303 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 ...
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1answer
859 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 ...
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2answers
1k 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 ...
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4answers
3k 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 ...
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1answer
2k 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 ...
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1answer
230 views

STATISTICS not allowed in the Attribute Table

I created a shapefile, calculated geometry then went to grab the stats, the statistics was ghosted, not allowing me to grab those numbers. I am using 10.1 ArcView. I deleted the field and created a ...
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1answer
2k 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. ...
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1answer
4k 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 ...
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0answers
126 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 ...
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1answer
128 views

QGIS CSV file sorts low numbers as high

So I have numbers that range from 5 to above 50, and when I sort these from least to greatest, the numbers less than 10 are treated as higher than anything else. It also does the same when I try to ...