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

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2
votes
0answers
68 views

How to open QGIS attribute table in form view using Python?

I've got a plugin where I load some layers. On the last layer loaded I show the attribute table. I would like to select the view different from the table view (see image). How can I do this in Python? ...
0
votes
1answer
52 views

Why do field values change when exporting from QGIS?

Today I came across a very strange behavior of QGIS. Maybe someone knows what's going on? I have a table with two fields which are defined as Double, with a Length of 20 and a Precision of 0. Some ...
1
vote
1answer
489 views

Data Driven Pages reading angles in attribute tables question

Is there a way to emulate the Data Driven Pages process (ArcGIS 10) of reading angles (rotation) in a polygon shape file? Screen shot of the DDP window with rotation field and corresponding attribute ...
0
votes
0answers
58 views

How to output visually correlated clusters using Morans I Spatial Autocorrelation?

How do I use Morans I to output visually correlated clusters? I can seemingly generate statistical data, but not one that I know how to visually output on a map. I'm trying to run a morans I ...
0
votes
3answers
66 views

How can I change more than one attibute at the same time?

I'm working in QGIS 2.0.1 Dufour. I started by cretaing a shape file form an AutoCad file. The problem is that in the AutoCad, my layers had symbols like: "~; ç; ^". As the QGIS does not support this ...
9
votes
4answers
9k views

How to change a CSV layer attribute value from text to number?

I read in a CSV file for linking to a .shp file. All the variables that are just numbers came in as text. How do I change the text variables to numeric in QGIS?
8
votes
2answers
563 views

Python, GDAL and building raster attribute tables

I have an integer raster for which I would like to build a raster attribute table using Python and GDAL. I can create a GDAL raster attribute table in Python as follows: >>> rat = ...
-1
votes
2answers
135 views

What software for direct editing of a DBF file?

I am currently processing GPS log data from my holiday and need to add information to the points. I remember I used OpenOffice and later LibreOffice to directly edit the files but currently I am ...
1
vote
2answers
244 views

How to combine rows in an attribute table

I'm fairly new to GIS and could use some help with an issue I've run across. I have an attribute table with three columns "FID" "Shape" and "Class" All records have the same shape (polygon). Each ...
4
votes
1answer
124 views

Is there a way to modify an Excel sheet which is already open in ArcMap?

I have an excel sheet that is joined to a shapefile in ArcMap. I need to modify many elements of the table, but every time I need to close ArcMap in order to be able to do it. Is there any way to ...
1
vote
1answer
76 views

How do I add coordinates to a polygon layer to be able to sort the polygons from north to south in QGIS?

I have a polygon file, where each polygon represents one property. I want to be able to sort the polygons from north to south or vice versa. I need them to be sorted in this way when I export them to ...
1
vote
3answers
92 views

How to add data to an attribute table?

I have a shape file (points) and would like to add points using the attribute table and not the Add Feature tool at the main screen. I went over the Qs here, but didn't find a similar problem to ...
8
votes
5answers
306 views

Print out the properties of the attribute table in qgis?

I have to merge a lot of shapefiles into one great shapefile. So I want to compare the properties of the attribute tables to see if there are differences between the tableproperties of each shape ...
0
votes
1answer
47 views

unable to modify records from one shapefile to another

I am trying to update the atrribute data of a feature class with respect to another one by matching a common field. But it is returning an error for the setValue command. My code looks like: import ...
0
votes
1answer
226 views

Use of Copy / Paste when editing attribute tables in QGIS

I have a number of polygon attribute tables with columns that I want to update with new information. Is there a way of (relatively) quickly editing info in attribute tables in QGIS eg such as using ...
0
votes
2answers
415 views

QGIS select features from attribute table using the “LIKE” operator

I created an expression with the help of the GUI in the QGIS attribute table of a vector (shapefile) layer of Native American ("Indian") reservations in the USA state of New Mexico. "NAME" LIKE ...
1
vote
1answer
175 views

Extracting data from a raster to a polyline based on start and end points?

I have a polyline shapefile with the attributes seen above. startx and starty represent the coordinates of the beginning of each segment of a polyline. endx and endy represent the coordinates of ...
3
votes
3answers
395 views

How to color-code geology maps with given CMYK colors?

I'm trying to understand whether it is possible to corectly display colours in British Geological Survey maps. Our client has a licence to use the shapefiles but unfortunately BGS don't provide SDL ...
2
votes
2answers
571 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
59 views

R generated files getting scrambled on import in ArcGIS

I want to put this out there just in case someone somewhere has experienced similar issues. I have a .csv file that I have generated in R 3.0 using this code: ...
0
votes
0answers
38 views

QGIS attribute values are changing when I save and stop editing a layer

I'm working with QGIS 2.0.1 on Windows XP. I'm creating a shapefile of points with one attribute column for a 10 digit phone number. I've tried setting the type as both string and integer, but I'm ...
1
vote
2answers
63 views

Why do I have text of attribute table on my view in ArcMap 10?

Can anyone tell me why do I have attribute table text on my layers in ArcMap 10 and how I can get rid of those texts? I have no idea when the texts appeared into my workspace. I have been digitizing ...
0
votes
1answer
54 views

attribute table in qgis wont save custom values

I am trying to edit a point shapefile in qgis and I have editing on for that layer, I have added a new column for the custom data, I have set it to text and have 8 characters allowed in the column ...
0
votes
0answers
42 views

QGIS 2.0 - how to search attributes for string?

How do you use the "Select by Expression" widget in QGIS 2.0.1 to select Attributes in a vector attribute table? How can a person with no SQL background learn to do this quickly?
2
votes
2answers
90 views

How to show only raster attribute table using GDAL?

I have a binary ArcGRID raster (AIG/Arc/Info Binary Grid) with an attribute table. I would like to get only this attribute table but gdalinfo outputs also projection information and bounds and then ...
1
vote
3answers
156 views

Append Attribute Table of multiple feature class with same points/ pointID

I used extract by points function to extract values from multiple rasters using a point feature class. The output is a couple hundred point feature classes with values associated with those rasters. ...
1
vote
2answers
114 views

Generating Values in the Attribute Table

In the attribute table within GIS, I have a certain column with ascending values, and I want to assign ID numbers (for easier readability and display) to a corresponding column. So for instance: Feet ...
1
vote
1answer
56 views

Is there any way to add an area column to new shapefile created from raster with gdal's polygonize in the same step?

I've been going through a fairly lengthy process of polygonizing very intricate raster images, then creating a new layer with the extra area attribute, so that I can then remove the millions of tiny ...
1
vote
1answer
174 views

How To Show Percentages By Coloring Polygons in QGIS?

I am trying to produce a map with QGIS that has counties shaded according to the percentage of people born in a US Region. For example, counties with a high percentage of people born in the South ...
4
votes
1answer
613 views

Finding duplicate records in a field via Python in field calculator

im looking for duplicate records in dbf files based upon the attribute called 'ID'. I have various dbf files from 500,000 records to 1.5 million and I know there are a host of duplicates. I would ...
5
votes
2answers
179 views

Is it possible to force uppercase in a geodatabase string field?

I have certain string fields in my geodatabase tables with which I would like to enforce an all-uppercase rule. These fields are ones that do not lend themselves to domains (such as address fields). ...
1
vote
1answer
156 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 ...
1
vote
2answers
187 views

How to add a new column in attribute table with attribute with indexes of another max-min ordered attribute field?

I've an attribute column named e.g. VALUE with different values I would like to make a column named e.g. ORDERsuch that the greatest value has the attribute 1 the second value 2 etc. etc. so order ...
0
votes
1answer
171 views

Sum of values within a buffer polygon

I need to do the following in QGIS and hope so much anyone could help. I have a vector layer with points. Each point represents a firm with the number of employees in the attribute table. I want to ...
1
vote
2answers
73 views

How to transfer multi attributes in to features?

i have 2 feature classes, i want to transfer all attributes by one click to another attribute feature class, i have used Spatial Adjustment tools, but the challenge with me is to, how to transfer all ...
2
votes
1answer
242 views

How to make autoIncrement number start with (001…009, 011…099)?

i have a challenge with my time in my work, i have feature class called "Parcel" storing many data, i generated an autoIncrement number by using field calculator, in field "parcel code" Expression: ...
0
votes
1answer
71 views

How to delete Field From Shapefile by Arcpy [closed]

I am using the following code to delete a field from a shapefile but I am getting an error! def main(): # Import arcpy module import arcpy # Local variables: point_shp = ...
0
votes
1answer
38 views

How to Add Field Between Two Existing Field in Shapefile

Can you please let me know if it is possible to add a new Field between two existing field using ArcPy? For Example if I have "Name", "Area", fiels already in my shapefile can I add a new field called ...
4
votes
1answer
687 views

Refresh Currently Open ArcMap Attribute Table using ArcObjects

I have written an ArcMap Addin (ArcMap 10.0) that allows a user to perform a join between an in-memory table and a feature class (feature layer) added to the TOC. I want the attribute table of the ...
0
votes
0answers
62 views

When doing table to table conversion, a text field gets converted to Blob type

I have one field that keeps getting converted to Blob type after conversion using table to table tool. The field is mostly text and fairly lengthy, maybe 250 ish characters. Is the length of the field ...
0
votes
1answer
85 views

How can I access second (or even third) level attributes in a vector layer and add them to the attribute table? [closed]

I got some .dxf file containing buildings I need for my map. The file loads nicely into QGIS and I converted sucessfully to shape. I still can find the Information I need (the buildings height) in the ...
0
votes
1answer
273 views

Sequential numbers in a field using Python in the Field Calculator on a based on Sorted Column not FID/OID [duplicate]

This code below auto-increments based on the FID/OID in the attribute table. How can I auto-increment a column based on a sort of another column? I don't want it to follow the FID/OID. Please advise, ...
1
vote
2answers
237 views

How can I replace all null values from attribute table to zeros?

I have a new column in my attribute table with a lot of null values and I want to replace all them to zeros. How can I do that in calculator? I'm using QGis 1.8 Thank you!
2
votes
0answers
42 views

ArcGIS - Table columns lose formatting when I make a new copy of shapefile (Decimals, Thousands separator, Highlighting)

When I make a copy of a shapefile or I join two shapefiles and then create a subsequent shapefile, my number type columns (in the attribute table) will default back to numbers with many decimals and ...
0
votes
1answer
48 views

How to store both fixed and variable attributes as a feature class?

I have a live data feeds as an XML file from the Internet. I need to use Python and ArcPy lib to store each feed as a point feature in a feature class of an ArcSDE datbase. The xml looks like: ...
0
votes
0answers
44 views

Is it possible to do subForm on QGIS attribute table

I envy, I have data which repeats differ only in a few fields out of 20. Is it possible to over-lapping comfortably enter data manually (that is automatically duplicate the program, such as ...
1
vote
1answer
695 views

How to Build Raster Attribute Table from .tif with pixel type of float or double?

I have a raster with the extension .tif. It's a subset of 87x87 pixel with values from some 6,66 to -4,27. If I right click on it there is no Attribute Table available. However, I can change the ...
1
vote
1answer
181 views

How to create attribute table for raster data?

I have raster dataset for rainfall but its not having attribute table. How can I create tabular data using the same raster file? How to join it back again to it? Software used is ArcMap 10.1.
1
vote
1answer
247 views

How to provide meanings (metadata) of attributes/fields with shapefiles?

Usually when doing GIS projects, especially when working as a freelancer, you're just provided with a bunch of shapefiles and you have to figure out yourself what all the table attributes mean. ...
6
votes
2answers
2k views

How to join tables without losing the original field names in ArcGIS?

I'm wondering if there is any method to preserve the original field names in Arc GIS when I join csv. tables to a Shapefile. I ask, because sometimes I join tables with 10, 20 or even more columns ...