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

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61 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 = ...
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1answer
45 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: ...
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1answer
80 views

Problem of linear records with zero shape length and no geometry in attribute table

I am working with a bicycle and pedestrian facility file geodatabase in ArcMap. I noticed a some of the records in the shapefiles/feature classes have a shape length of zero in the shape length ...
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1answer
63 views

How to edit a table in GRASS?

How do I edit a table in GRASS? When importing a vector into GRASS from QGIS, all the attributes are lost and I need these to continue with my analysis.
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83 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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163 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 ...
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1answer
64 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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55 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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2k views

How to divide polygon layer into multiple layers by values in attribute table column in ArcGIS 10.1

I have polygon layer with multiple types of area (forest, grass, and many more), and I´d like to divide this layer into many layers by the area type. I´ve tried Split function but I receive an error ...
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2answers
709 views

How to auto populate multiple fields in attribute table?

i have Feature Class Buildings, it has many fields like ...
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2answers
481 views

Primary key field hidden on attribute table added to QGIS

I'm having the following issue with QGIS. Adding a sqlite text table (Layer > Add Vector Table) QGIS hides the primary key field (having name id). I understand also QGIS uses this field as unique id, ...
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163 views

How to view or export WMS data in tabular format?

Is there any way to export or view data from a WMS in tabular format? The info tool brings up a table showing the attributes for the selected feature, but I want to view attributes for all features.
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4 views

Creating New Layer After Sorting Attribute Table using QGIS?

I have been self-teaching myself some open source GIS. I downloaded QGIS and have been following this four part tutorial - ...
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33 views

How to aggregate data which meet certain conditions using QGIS?

I have a point shapefile with meteorological stations which contains three columns, which are: Date: The date on which the measurement has take place (it covers a range of ten years) Id: The ...
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23 views

How to set QGIS action to open and search for features on Google Maps?

At the moment, I have an action that takes each term in an address field and conducts a search on EACH term in Google (ie. multiple tabs are opened for each term). The action code I have is the ...
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23 views

Attribute table where rows do not appear

I have an attribute table with 20000 rows but the rows don't appear in the attribute table, so I cannot do a selection that I want. Any idea what the reason could be? I have arcgis 10.2. Fyi, I have ...
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2answers
41 views

Get coordinates in both decimal degrees and meters in an attribute table

I have an attribute table of points and the coordinates are stated in decimal degrees. I would like to add two fields where the coordinates are also stated in meters or kilometers. I am using ArcGIS ...
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10 views

Attribute table for the layer in ArcEngine Application

I have requirement of displaying attribute table in our ArcEngine Application something like arcMap for the selected layer in table of content. I am not able to find suitable example on forum or other ...
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0answers
13 views

Get Web Map Layer Field Value for If/else Statement

I've been trying to read through the ArcGIS JavaScript API but can't find what I want. I have a web map on my page that is based on my my map stored on ArcGIS online. I want to create an if/else ...
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56 views

How to keep all the unique columns of the shapefiles after merge?

Writing a script where the user is asked to select a directory which contains Folder_1 and Folder_2, both containing shapefiles and run various algorithms. The basic logical process of the script is: ...
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29 views

Open attribute table without highlight selected feature in ArcObjects

I am using ArcGIS 10.2.1, I have a need to display the attribute table only for selected features, but I don't want to highlight the selected features. The purpose of open the attribute table is to ...
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1answer
28 views

QGIS: Comparing 2 attribute tables to discern unmatched attributes

In QGIS, I am trying to compare two different attribute tables. One is simply the updated version of the other. Each feature has a unique identifier. How can I return the number of unmatched records? ...
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29 views

Points on map disappear when apply certain column

I am a linguist who studied some variables in New Zealand English. Now I wanted to map the proportion of certain variables onto a map. It has worked fine so war and I've been able to map quite a few, ...
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1answer
36 views

ITableWindow2 does not show all records

I have to develop an extension in C# for ArcMap 10.2 and I need to show information from a datatable in an a table window. I can show the table without problems, but I have a problem I can´t resolve. ...
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1answer
47 views

Change Attirbute Name (Fiona)

I have a shapefile that has 2 attributes named "X" and "Y". I want to change this to "Lon" and "Lat". My (limited) experience tells me that I should read in the original shapefile, preserve the ...
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55 views

PyQgis: How can I “append” features to a Vector Layer instead of “stacking” them?

As I read data from a text file and add points to a QgsVectorLayer (as well as related attributes), each new record gets 'stacked' on top of the previous one in the Attribute Table (and within the ...
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45 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 ...
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31 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 ...
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12 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 ...
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46 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 ...
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14 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 ...
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13 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 ...
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53 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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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 ...
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1answer
75 views

Building attribute table from raster in ArcMap 10.1

I have a NetCDF file containing the latitude, longitude and porosity for the entire US. I am trying to add another value (wilting point) which depends on the porosity. I wanted to extract the netcdf ...
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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 ...
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41 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?
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1answer
53 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 ...
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52 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 ...
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1answer
82 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 ...
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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 ...
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1answer
35 views

Inserting attribute table into QGIS Composer is limited to 99 rows

Inserting attribute table into QGIS Composer is limited to 99 rows? Or am doing something wrong? Stems from How to import or incorporate formated Excel tab into QGIS print composer
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1answer
254 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, ...
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125 views

Change field attribute in one column based on Domain value from another field using Field Calculator

When I am editing a feature class, I want to automatically populate another field base on one column in the table. Here are the fields and data I am working with. Proj_Code, Proj_Name DA, Dawn Lake ...
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60 views

Using Raster Data in a Vector Layer's table in QGIS 2.01

I have a vector layer containing point data representing floor levels. The attribute table contains: Easting Northing Floor Level I also have several water surface levels representing the ...
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40 views

Reading particular fields in attribute table and exporting it as a text file

I am having a shape file for which i created a polygon centro ids using qgis. When I open the attribute table it shows various fields such as shape area, shape length,unique id x coordinate and y ...
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1answer
87 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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2answers
150 views

Cannot register a Feature dataset

I am having an issue trying to register a dataset, and being able to edit a featureclass within it. I am new to SDE so please bear with my explanation. I read online you cannot register a feature ...
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1answer
73 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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30 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 ...