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
0
votes
1answer
22 views
access attribute values in openlayers rule
I have a webgis where i use openlayers and i'm trying to make a FOR loop to generate a series of rules for my POI layer.
I have tried just like that:
http://pastebin.com/CTuiWd4V
My problem is that ...
2
votes
0answers
19 views
Generating composite values ( MAPFID numbers) for previously duplicated vales based on 2 different fields
Good day everyone!
I have lurked around here for info preiously, but this is my first post, so please be gentle if I commit any faux pas. Okay, let me try to break this down so we can all ...
1
vote
2answers
79 views
Join excel attributes to shape attribute
I am wondering if there is a way to join the attributes from excel tables to shapes in Qgis. I have abbreviations in the shape and want to add the associated complete names from excel file by ...
0
votes
1answer
33 views
Calculate attribute height of point data
I have an x (easting), y (northing) and z (height) values associated with my point shapefile. I would like to calculate the z values from the DTM I have - how do I do this in QGIS? I am fairly new ...
1
vote
2answers
36 views
ArcGIS Find and Replace attribute search error
I am editing a vector layer in ArcMap 10.1 in the attribute table the no data value for some of my fields is -1.7976931348623157e+308. I would like to replace that with 0.
I attempted to use the Find ...
0
votes
1answer
22 views
How to SUM all the values in a field?
I am intersecting a base road layer with 6 separate road layers to create 6 line feature outputs. I am using Model Builder for this.
I was wondering is there a way I can SUM all of the values in a ...
1
vote
1answer
46 views
How to convert polygons to centriods without losing attribute names?
I have a GeoJSON file of polygons and I need to convert it to centroids. Finding the centroid is very easy in QGIS.
Problem
My attribute names are very long and have a colon between them, e.g. ...
0
votes
1answer
80 views
Add new rows to a shapefile
I'm using QGIS. When I enable editing of a shapefile's table attributes and select, 'open attribute table,' is it possible to add new rows to the shapefile's table attributes?
The problem I'm trying ...
1
vote
1answer
30 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 ...
1
vote
1answer
50 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 ...
0
votes
1answer
32 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
32 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
36 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
56 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 ...
0
votes
1answer
79 views
How to mine county GIS for zoning tags associated with each parcel's Tax Map Sequence (TMS) number?
I'm trying to create a database of a local county's parcels for which I already have a list of every Tax Map Sequence (TMS) number for parcels over 10 acres in the county.
From the county courthouse ...
0
votes
2answers
96 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 ...
0
votes
3answers
68 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 ...
1
vote
2answers
78 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 ...
0
votes
1answer
55 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
35 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 ...
3
votes
1answer
112 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
116 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
73 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
37 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
46 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 ...
0
votes
2answers
71 views
Microstation linestyle attributes in Arcmap
I wanted to ask if anyone knows how to get the linestyle attributes from a dgn V8 file as a attribute field in an arc feature class? Im doing some electricity network mapping IN arcmap 10.1 and need ...
3
votes
1answer
133 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
110 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 ...
0
votes
3answers
62 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
211 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
30 views
Is there a way to represent multiple attributes of a single point feature with icons?
I always wandered 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
39 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
2answers
140 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
134 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
68 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
80 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
47 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
72 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
27 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
87 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
88 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
118 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
246 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 = ...
1
vote
1answer
136 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
123 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 ...
0
votes
0answers
28 views
Min attribute NAME and replacing 0 with no data value
I've performed some massive OD cost matrices, and then using the pivot table function, I have the results in a table where each row is an origin and each column is a destination and all the values are ...
5
votes
2answers
90 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 ...
1
vote
1answer
75 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 ...
2
votes
0answers
199 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 ...
0
votes
1answer
32 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" ...