In GIS, Fields, also known as attributes, contain information about features.

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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 ...
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93 views

How can I exclude a field on a table from being copied?

I have a query "layer": >>> r = arcpy.MakeQueryLayer_management(r'C:\path\to\connection\file\connection.sde', 'TEST', 'SELECT T.ID AS OBJECTID, T.* FROM MY_TABLE T WHERE T.SOME_COLUMN = 1', ...
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41 views

how to separate a list of features from its shapefile_

I tried to copy all features in a list of dictionaries. the code looks as follows: def iterate_features(self): feature_set = arcpy.SearchCursor(self.address) for feature in feature_set: ...
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34 views

Field Calculator not showing some fields

When I open my attribute table, click on a column, and select Field Calculator it opens and doesn't list all of the Fields in my attribute table. Why can't Field Calculator find these Fields?
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52 views

Copy feature class to feature class in loop and a list of fields in modelbuilder

I have a several file geodatabase with seven features in it (polygon). I want to copy them to a new feature in a other empty file geodatabase (instead of deleting the fields...had same problems with ...
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33 views

matching up fields in different tables

I am going to attempt to explain my problem, and hopefully someone out there will have some insight/solutions/work arounds. I work for a University, and we have some utility/site people go out with ...
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33 views

REtrieve field info from web map services in ArcMap

I am trying to work out what fields are associated with a map service in ArcMap. The service is very slow in drawing and I wondered if it was possible to retrieve attributes associated with a layer ...
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51 views

missing values w/ updatecursor and addfield - gp

I added a feature to my 'overloading' field update script which adds a new properly named field if there is no space left to append the value into the record. This appears to run well, however upon ...
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Why is ArcMap deleting data from a field when I add a new one?

My copy of ArcMap 10 is acting pretty strangely. I have a shapefile and all I've done is added a new field as a FLOAT and for some reason all data in another one of my fields is being deleted! Does ...
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28 views

QGIS 2.4.0 Chugiak “reduced” real-type numbers. Precision problem? Bug?

I have a SHP point file created from CSV with QGIS 2.4.0 Chugiak. It contains some data on noise in a certain point. When I import from CSV, it seems to be fine, but when I export to SHP and open the ...
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27 views

Why does this python OGR code for creating a layer and then adding a field not work?

Spot the difference! So this works... fp = "C:\\LiDAR\\MyLayer.shp" layer = "MyLayer" driver = ogr.GetDriverByName("ESRI Shapefile") data_source = driver.CreateDataSource(fp) srs = ...
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60 views

Russian in fieldname changing with Python in ArcGIS

Is there any way to rename fieldname in the attribute table of a layer/shapefile in ArcGIS 10.2 containing russian letters? If yes, is it possible to do it in a script?
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101 views

Why does inline variable output overwrite occurs with Reorder fields tool?

I am trying to use this Reorder fields modelbuilder tool but for some reason the inline variable (%name%) for the output gets overwritten with each file pass until the last one. Otherwise it works ...
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44 views

Feature class field count caching issue

In our application, we exposed a custom file format to ArcScene through a custom plugin data-source. However, we experience some problems which we ascribe to caching issues. We generate a dataset ...
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42 views

How to add field to postgres layer with PyQgis?

I'm fetching a posgtres layer with PyQgis and then I'm trying to add field with this: lyr.startEditing() lyr.addAttribute(QgsField("class", QVariant.Int)) But It is not adding the field and also ...
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43 views

QGIS grabs incorrect field values for categorized style classification

as seen in the first image, the field values QGIS returns when I attempt a 'select by expression' are values found nowhere in the field in question ('FLD_ZONE'). Instead, it returns a selection of ...
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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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76 views

How to add a field to a .zip shapefile?

I am exploring the possibility of using ArcGIS Online (Free Public Account and Explorer) with my new Global Studies students. (So far, the Free Public Account appears to be more user friendly and ...