A characteristic of an object (person, thing, etc.). In the GIS field, it is used to refer to the non-spatial data associated with a location or geometry

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3
votes
1answer
106 views

Field Value Mapping QGIS

I am wondering if there is a way to do field value maps that are filtered based on another attribute field? I know how to associate value maps, but not that are connected to another field. I have ...
2
votes
2answers
316 views

Is the derived area/length/xy values of a polygon/polyline layer in QGIS usable?

I have a raster that is projected to a state plane CRS and I am adding polygon/polyline shapefiles that are projected to WGS84. On the fly transformation is set to reproject to my raster CRS. When I ...
1
vote
1answer
252 views

How to write GML and GeoJSON features while retaining attributes in .NET?

I am developing a .NET project [C#] that needs to export/write features as GML and GeoJSON, including, of course, the attributes; data could queried by a database or manually entered. I checked ...
1
vote
0answers
236 views

View attachments in popup when using the editor widget

I am using ArcGIS javascript API to construct an editor app for a layer. I am using the default out of the box editor widget to edit and display data for an app. The layers I am editing contain ...
0
votes
1answer
64 views

Value Map Attributes to Multiple Files in QGIS

I am hoping someone can share a way that I can some what automatically (none manual) associate a pre-defined CSV file for use with multiple shapefiles as an attribute Value Map. I have a number (in ...
0
votes
1answer
289 views

Export table structure information to Excel QGIS or MapInfo

I want to create a data dictionary of the tables of our primary layers. So I want a way to export the table structure to Excel. I don't need the actual data, I just want to know what columns are in ...
1
vote
2answers
355 views

How join attributes for point feature from nearest points in road network

I have two layers: 'linear' - road network and 'point' - points in each linear features intersections. Point layer have in attribute table name for each point features: A,B,C,D,E,F, etc. How add in ...
1
vote
3answers
157 views

Conditional Statement for attribute data

I'm trying to write a conditional statement that references another field within the same shapefile layer. I want it to only do so if the one field is " Null " and leave is alone if there is already a ...
2
votes
2answers
579 views

Merge lines with the same 'name' attribute on QGIS?

I have a shapefile with a few thousand lines, each is a street segment. I'd like to merge all features with the same 'streetName' attribute into a single attribute. I only really care about the name ...
1
vote
1answer
250 views

Connect not working for custom QGIS form

So I have a custom form for editting feature attributes. However, I can't seem to correctly disconnect and reconnect certain bindings. The init code is below and should work for any simple QT widget ...
2
votes
1answer
56 views

Compare features in PostGIS with updating attributes

I have two polygonal layers: "existing" and "modified". Attribute table of "existing" and "modified" layers have same column "feature_id" - number of feature. Please help me create query which write ...
5
votes
1answer
500 views

How to programmatically associate a layer with a custom UI?

I know it is possible to associate a layer with a custom UI for editing feature attributes using the QGIS interface. But is this possible with Python? This link shows how to achieve the result ...
5
votes
2answers
443 views

Clip polygons with other polygons based on matching attributes

I have two shapefiles, one which contains event locations and the the other of which represents regions where events take place. Events polygons with year and region_name attributes Regions ...
0
votes
1answer
491 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 ...
1
vote
1answer
82 views

Stop custom attribute form from resizing in Qgis

When I open a custom attribute form for a feature in Qgis it always gets resized to the default size of the original Qgis attribute form. I've tried to set the sizePolicy in QT Designer to Fixed ...
0
votes
1answer
99 views

Custom forms and location of python code

I'm working with custom forms for the attribute table of various qgis-object and it works realy well, but I would like to have my forms and their python files separated from the projects. This is not ...
3
votes
1answer
720 views

How to add CSV data with no coordinates to a polygon layer in QGIS?

I would like to add attributes from an spss database (around 300 cases) to a polygon layer in QGIS. Both datasets have a column with unique IDs. I exported the spss data to a CSV file which does not ...
0
votes
4answers
157 views

How can I calculate different polygons by different attributes?

I'm doing my master thesis and want to calculate different polygons (in QGIS 1.8 for Mac) in four different columns which I defined by different attributes. i.e. some of the attributes in the first ...
1
vote
5answers
322 views

Only Capability appearing is Feature Access

I was wanting to know if anyone could explain why the only capability showing when I try to publish an ArcGIS Service is Feature Access (Picture Below). I am needing to create a service that will ...
0
votes
2answers
3k views

OpenLayers Select a feature from attribute or id

Using Openlayers.....Is it possible to select a feature on a map by an attribute? eg: Select a feature from a dropdown menu populated with the feature "id" or a table field attribute values.
2
votes
1answer
63 views

Representing multiple attributes of single point feature with icons?

I always wondered if there's a way to represent using an array of various icons multiple attributes of a single layer containing point features. For example, think about a point feature with these ...
1
vote
0answers
92 views

Attributive WFS styling

I have a local Geoserver connected to a PostGIS database and a table with an attribute field called "style" which is of data type integer. On the OpenLayers preview of the Geoserver the data is shown ...
0
votes
3answers
718 views

KML attribute data on onload of html page using openlayers

How to get KML attribute data on onload of html page using openlayers. This is kml file: click here to get kml file Any help is appreciated. Thanks in advance.
2
votes
0answers
212 views

Divide polygon layer by point layer in QGIS?

I have two layers - one polygon layer that is a buffer of a road layer, and one point layer that shows certain locations along that road. What I want to do is to divide/split the polygon layer at the ...
0
votes
0answers
148 views

Why do my Attribute table joins result in all NULL?

I spent hours getting "null" results in joining a downloaded state and county shp file to a self-created file (SCF). What I found was that the SCF had to have "EXACTLY" the same set of names/ID#'s as ...
0
votes
2answers
239 views

Adding attachments to features

Does anyone have an elegant solution to adding/viewing attachments, like a table/photos for example from within ArcMap using only the ArcGIS basic license level? Or any suggestions? I'm looking for ...
2
votes
1answer
97 views

Near analysis by matching attribute in two different layers

I need to perform a near analysis to assign cases in one feature class to their nearest match on an attribute in a different feature class (ex: Tutors and Tutees need to be paired by same language ...
3
votes
1answer
174 views

Is it possible to use UTF-8 characters for shapefile attributes?

I heard that according to a specification shapefile attributes stored in dbf-files cannot have UTF-8 as encoding. And then I found out that an additional file with the ending CPG can be used to define ...
0
votes
0answers
28 views

Raster attribute field error [duplicate]

I am trying to add jpegs to a raster data type attribute field. I want to this field to be managed by the file geodatabase. When I load the photos and try to save my edits it get various errors but ...
0
votes
0answers
213 views

Display colour coded road traffic data in QGIS

I would like to colour code a shape file containing road polylines to represent the heaviest flows of traffic. The shape file contains attribute data linked to each section of road where road traffic ...
2
votes
1answer
251 views

Merge attribute data using spatial query in QGIS

I have 2 vector layers that I wish to correlate attributes - a shape file containing boundary polygons and a shape file containing point locations. I'm using the vector>spatial query tool to generate ...
0
votes
1answer
391 views

python script in modelbuilder: get field value and return boolean expressions

I have problems integrating a python script in a modelbuilder tool. I'm a absolute beginner with python. Maybe there's also an easier way to solve this problem in modelbuilder without using a python ...
0
votes
0answers
527 views

Problem reading attribute with Python using osgeo.ogr

I am working thru "Python Geospatial Programming" and I have a problem in a program in Chapter 6 that I cannot seem to solve. The small program: import osgeo.ogr shapefile = ...
2
votes
1answer
295 views

Raster as Attribute Field Error

I'm using Arc 10.1. I am creating a parcel inventory where I would like to have a photo of the property attached as an attribute and view-able with an HTML popup. I have a polygon feature class built ...
2
votes
2answers
235 views

Capitalizing The First Letter Of Each Word In Attribute Field

Does anyone know of a way to capitalize the first letter of each word in a field in an attribute table? I am doing this in QGIS. I know of field calculations to change all the words to Lower or ...
6
votes
2answers
160 views

How to enumerate join values with ArcGIS?

I have two shape files (e.g. postal code areas and cities) which I want to join based on an id that both shape files have in common (the id would be the city name in this example). Joining the two ...
2
votes
1answer
107 views

Join attributes by date in Qgis

I learned (thanks!) to use the join feature built into the layer properties, but in my case it doesn't work because data do not match perfectly. Infact shape refers to geotagged photos, csv is a log ...
3
votes
0answers
418 views

How to create a custom Attribute Inspector for mobile app using the ESRI JS API

I am making a mobile version of a JS web application I developed. I'm noticing though that the AttributeInspector widget by default uses standard dojo/form controls. This means that the form within ...
1
vote
0answers
53 views

How to obtain and compare neighboring point attributes? (ArcInfo)

This question is kind of hard to explain in a short phrase, so this is what I'm talking about. I have access to an ArcInfo 10 license. I have a layer of point features that all have a "Team" ...
0
votes
0answers
337 views

ESRI JS API PopupMobile - view attribute page directly

I am using the ESRI Javascript API to write a mobile web application. I have used the PopupMobile widget for viewing/editing attributes. This widget creates a popup on the map when a feature(s) is ...
1
vote
1answer
205 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: ...
1
vote
1answer
150 views

Check Personal Geodatabase attribute against external MySQL database?

I have a Personal Geodatabase to which editors enter values from some field inputs. I would like some of the entries, eg Project No ( whose name is unique and has some some related attributes like ...
3
votes
2answers
238 views

How to create a label formatted like “ 1,000' ” from a numeric field?

This question builds on a previous question I came across at gis.stackexchange: How to easily edit attribute data using Regular Expressions? Perhaps someone can point me in the right direction? I ...
0
votes
2answers
147 views

loading CanVec directory full of .shp files

I'm totally new to QGIS, and trying to view a Canadian Topo map as published on an iMac - I don't want to change it. ...
1
vote
2answers
121 views

Generating new shp files according to attribute in QGIS

I know that it is possible to color a vector map by attribute. I separated a map into 4 colors based on an attribute and now I want to generate a new map for each color. Is there a way to do this in ...
0
votes
0answers
126 views

repeating records in attribute table

I have a point shapefile containing records of bird sightings with location, species and land cover type that has about 30,000 records. I noticed today that one record is repeated about 60 times, with ...
2
votes
1answer
87 views

Displaying raster attributes on data driven pages

I have a feature class of 50 properties that are ranked. I have a photo for each property stored in a raster attribute column (in the feature class) called "Picture". I am trying to create a Dynamic ...
0
votes
1answer
300 views

Add sequence numbering based on attributes in a table [duplicate]

Is there a way to auto populate a sequence of numbers based on another attribute in a table? For example, if field "Name" has a sequence of numbers from 1 to 10, and I want to number all the rows in ...
2
votes
1answer
51 views

How to make a certain attribute Toggelable? [duplicate]

I have imported data from an excel spreadsheet containing lat,long coordinates associated with other attributes such as current operator of each point (well). I imported as a tab delimited file, then ...
2
votes
3answers
2k views

Joining attributes of polygons and points by location in QGIS

I have two shapefiles.... points containing a number field 'response_time' a polygon grid of square polygons containing fields including 'PNTCNT' with the number of points per polygon, calculated ...