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

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1answer
98 views

How to simplify shapefiles without losing attributes?

I want to simplify a huge shapefiles using mapshaper. However whenever I simplify the shapefile I loose a lot of data attributes. how can we simplify the shape files while retaining at least some of ...
0
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1answer
55 views

Piechart of a text column from attribute table in qgis

I have this problem: I would like to create a pie chart from a column of a attribute table, and I would like to see this pie chart above the map. The column contains names not numbers (I think fields ...
1
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2answers
316 views

Autoincrementing Python Script is over writing all fields versus just fields that are null

Using ArcMap and the Field Calculator I have a python script that should autoincrement the FacilityID field if it is null. It works the first time through but the second run causes it to overwrite ...
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0answers
82 views

Merging shapefiles to one, rearrange columns?

I am trying to merge two shapefiles which both contain polygons representing properties in QGIS 2.2. One problem is that the names of some of the columns in the attribute table differ between the two ...
3
votes
1answer
142 views

QGIS - Is it possible to increase Output Field Name?

When creating a new Column, the default value for the length of the name is 10. Using the Field Calculator via the Model Builder, I want to include the names of regional areas into the columns which ...
1
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1answer
162 views

Data Driven Pages and Attribute tables

I was wondering how I can show ID/page specific attributes on a map book project that has already been made? I recently took over our GIS mapping duties for a former coworker who retired. He had ...
1
vote
1answer
357 views

How to correctly use Datepart( ) in ArcGIS?

I have two date fields dd.mm.yyyy with a start and an end date in my attribute table. Now I want only to extract the years from these fields to new fields. So I created another field, and used ...
1
vote
1answer
53 views

QGIS how to add string field

I have a few point shapefiles. I want to merge them, but first give each point a certain type according to shapefile. How do I add a String field, all with the same word? (changing the field type ...
3
votes
1answer
89 views

loss of attribute data when copying between layers

I am trying to copy points from one layer to another in QGIS 2.2 The problem I get is that all the attribute data from the copied points is missing when copied onto the new layer, the columns show ...
1
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2answers
136 views

Open mail client when clicking feature in Attribute Table

One of the attributes/features of my layer contains an email address. I'd like to be able to open the default mail client by clicking on the mail address from the Attribute Table. After some initial ...
2
votes
2answers
154 views

How to show the entire number of records in the attribute table?

How do I show the entire number of records in an attribute table? The number should be around 100k records, but it only loads 2k at a time.
0
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0answers
16 views

Does Terrain Navigator Pro have Attribute Tables?

I learned about mapping with ESRI ArcGIS, I am now trying to use Terrain Navigator Pro (TNP) and finding that there are things I can't figure out because they are named differently. Is there a ...
1
vote
1answer
165 views

extract shapefile attributes from raster colors

I have two layers: a shapefile with states and counties (shp) a raster file (with colors and some text and borders, but not a perfect map) (tiff) I want to use the colors in the raster file to ...
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0answers
50 views

QGIS 2.2 Changeing txt data in theme table not working

A week ago I upgrade from QGIS 2.0.1 to 2.2 and try to edit some simple point themes I made recently. To my surprise, QGIS 2.2 randomly - not allways, does not allow me to change text I type into text ...
0
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1answer
302 views

Copy/ Paste from spatial attribute tables into non-spatial tables in Arcmap

Imagine I have a shapefile which has its own attribute table and I have a non-spatial stand alone table too. I am going to copy the rows from the shapefile attribute table into the stand alone table ...
1
vote
1answer
1k views

Export attribute table (feature class) to text file in batch?

What would be the most efficient way to export attribute tables from multiple feature class files stored in a file geodatabase? Export to .txt or .csv. Is there any sort of batch process? Or python ...
1
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0answers
18 views

Query from plugin that shows result on Map and in Attribute Table

I'd like to create a plugin that performs a static (no user input required) query that, based on a condition, selects all the features on the map and displays these in the attribute table. I have the ...
3
votes
1answer
92 views

How do I add a field to a table using the QGIS graphic modeler?

I was wondering if anyone could help as I'm struggling to get anything out of the QGIS graphic modeler. For info I have no programming skills whatsoever. I need to be able to add a new field to an ...
0
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0answers
20 views

Link/unlink buttions in the Attribute Table's Form View

Toggling the edit button, in the Form View/Table View, buttons for adding/deleting a record is available. Two additional buttons are also available (Fig. 1). From the look of the icons they perform ...
1
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1answer
122 views

Alias's in the Attribute Table's Column Preview/Column Filters

We've spent some time setting up alias's in Layers/Properties.../Fields (Fig. 1) for database fields displayed as the column headers in the Attribute Table (Fig. 2). Switching the layout in the ...
2
votes
1answer
53 views

Expression to create and populate column based on filtered fields

I wanted to create a column and populate it with data based on data from other fields. If column_1 contains fields which has similar string (eg. field_1 = "Country: UK", field_2 = "Country: US", ...
2
votes
1answer
376 views

How to adjust QGIS attribute table view column width using Python?

I'm programmatically opening the Attribute table via Python through a plugin. All of the columns have a default width, but some of the data that I'm using do not fit. It's not enough to be able to ...
0
votes
1answer
61 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
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1answer
569 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
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0answers
90 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 ...
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vote
3answers
77 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
2answers
748 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 = ...
4
votes
1answer
189 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
101 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
110 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
346 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
74 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 ...
1
vote
1answer
617 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
2k 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
345 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
639 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
834 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
62 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: ...
1
vote
2answers
70 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
66 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 ...
2
votes
2answers
147 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
310 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
263 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
93 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
265 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 ...
5
votes
2answers
254 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
205 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
406 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
222 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
101 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 ...