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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2
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1answer
22 views

Using ArcGIS ModelBuilder in to Select By Attributes?

I have a file showing for each disaster, which provinces were affected. The number of provinces affected varies and their names or associated code varies as well. Example, if a flood in 2000 ...
3
votes
0answers
28 views

How to assign polygon attributes to grid cells using centroids in QGIS?

I am relatively new usign QGIS but have realized it is a great tool. Unfortunately I can´t figure out the following yet. I have two polygon shapefiles, one is a grid I have created using QGIS ...
1
vote
1answer
21 views

How to manually assign new names to attributes in a spatial data frame column with NA values

Data can be found here (Admin 1- States and Provinces, first download button): http://www.naturalearthdata.com/downloads/10m-cultural-vectors/ I have a shapefile of the world that I'll be pulling ...
2
votes
2answers
52 views

Copy geometry from one layer onto attributes of another?

I have two polygon layers, A and B, that have the same features but totally different attributes. I want to use the attributes from layer A, but I want them to have the more accurate geometry from ...
1
vote
0answers
40 views

Polygons get lost when doing Join attributes by location

I am trying to do the operation "Join attributes by location" in QGIS. I have a point layer and a few polygon layers, all of them in shapefile format. I want to sum the values of the attributes of the ...
2
votes
0answers
23 views

Attribute table update after v.split on GRASS GIS

So I just used v.split to create shorter segments (with just 2 vertices) of my contour lines. I was left with about 22000 lines but, when I open the attributes table, I find no more than 45 entry ...
2
votes
1answer
43 views

Why is QgsFeatureIterator returning bad data?

This is a spin-off of another question I asked previously, but it has grown in scope and deserves its own thread. While iterating over a vector layer (shapefile) I included the following ...
1
vote
3answers
42 views

How to assign diameter size to valve feature class based on waterline size?

I have two shapefiles, valves (points) and waterlines (polyline). The waterlines have a diameter attribute that is populated with the correct size. The valves have an attribute for diameter size as ...
0
votes
0answers
28 views

Using Definition Query to pull out monthly ridership data?

I have a database of bus stop ridership for Jan-Nov of 2015. There is an existing data set information pertaining to bus stops. I previously linked individual tabs (for each month) to the bus stop ...
0
votes
1answer
40 views

Problem with expression syntax in Attribute Assistant

I am using Arc 10.3.1 and attribute assistant. I would like the attribute assistant to autopopulate a field called [Supervisors] with a conditional statement depending upon the values of other ...
2
votes
1answer
28 views

PyQGIS: Change attribute value doesn't work, results in NULL

I am writing a QGIS plugin, which at one point attempts to change several attribute values on a layer. However, in the end no changes are made. If I punch similar code into the built-in Python ...
3
votes
1answer
69 views

Showing QgsAddAttrDialog in a Python plugin

I want to invoke the builtin add field dialog from my python plugin in QGIS: This is the add attribute dialog of the attribute table. It is located HERE. I expect it to return a QgsField. ...
2
votes
1answer
52 views

Plot attribute of shapefile with R

Does anybody know how to plot any attribute of a shapefile with R? For example, like this.
2
votes
1answer
27 views

QGIS, displaying attribute values over geographies

Is there a way to use graduated symbols that display a value off the attribute table? For example, I have a map of Vermont towns, and I would like to have an industry code floating above each town (I ...
2
votes
0answers
56 views

Reading feature class attributes with or without quotes in ArcPy?

I'm working on a script that clips a batch of feature classes by a selection made in another feature class. The way it works is by reading the clip feature fields, then allowing the user to select the ...
4
votes
1answer
51 views

Combining 2 different symbologies in QGIS

I've got a layer (road axis) with 2 different attributes : one with the amount of trafic, another with the number of people living next to this road. As symbology for the trafic amount, I like use ...
0
votes
1answer
48 views

When aggregating points by polygons with sp::over function, how do I include attribute data from both the points and polygons? [duplicate]

Data: Zipped ea.ml1 shapefile can be found here, and the country outline can be downloaded here at the GADM site. I've been using the Ethiopia ESRI shapefile. Branch locations are here. I have a ...
1
vote
1answer
35 views

Selecting Minimum values from in_memory dataset!

I am trying to select the minimum value from a data set being stored in the in_memory workspace. This prevents me from using sub-queries. I'm hoping that someone has found a work around for this issue ...
4
votes
1answer
88 views

Updating feature attribute in QGIS plugin?

I am writing a plugin for QGIS (v2.12). There have been quite a few similar questions on this forum, but they don't seem to work for me. my plugin does the following: get the vector layer check ...
4
votes
2answers
64 views

How to remove unwanted columns from a polygon in R AND keep the result as a spatial data frame?

To simplify my problem, I'm gonna start at the source instead of explaining my full-map problem. I have a shapefile of Ethiopia pulled from GADM (can be downloaded here). A lot of the attribute ...
3
votes
1answer
34 views

How do I retain all attribute data when clipping two polygons in R? [duplicate]

I would first like to say that my question is very much similar to this answered one, but the proposed solutions don't seem to be working for me. I think that my question is slightly different, as I'm ...
2
votes
1answer
31 views

Default attribute when merging two polygons in ArcMap?

When merging two polygons in ArcMap 10.3, it appears that the new polygon always inherits the attributes of the larger (by area) of the two input polygons, unless otherwise specified. Is this by ...
1
vote
0answers
19 views

How to manage unique ID's for altered polygon

I'm working with administrative boundary polygons and am wondering when to keep the existing unique ID, and when to assign a new unique ID to a polygon. For example, if District A merges with District ...
1
vote
1answer
69 views

How to get sum of and group by attributes QGIS

I have a line vector layer which has multiple segments within individual polygons in a separate polygon layer. I have spatially joined the attributes so that each line segment now has the same ID as ...
1
vote
0answers
37 views

Using Python Opensource Libraries to check users who visited a store [closed]

I have a few files with location information: 1) User Lat Long Pings in Parquet Files (can be converted to CSV) format - this contains userid, timestamp, lat and lon 2) US County/State Shapefile 3) ...
5
votes
2answers
68 views

Is it possible to merge attributes from lines which are on top of each other?

I was able to merge the different kinds of roads (verharding lijn) with the normal roadmap (Wegen 1.0). The attributes were copied to all the records, but there are empty attributes where the kind of ...
3
votes
0answers
21 views

Displaying attribute values in IntraMaps Roam?

I am having troubles with displaying attribute values in IntraMaps Roam. Let me give you more details: My QGIS project is based on an SQLite database The attribute table in QGIS is displaying the ...
4
votes
2answers
75 views

column data to shapefiles

I'm using QGIS 2.8 and am trying to take a shape file that has multiple column data and display that as individual shapes. For example...I have a soil test data table that includes pH, P, K, Fe, Zn ...
1
vote
1answer
88 views

Change attributes values?

i want to change attributes values in a memory layer. I already asked a similar question but i'm re-stuck on the problem and don't find any solution to this basic need. Here is what i'm doing so far ...
1
vote
1answer
29 views

Multiple attributes - is it possible to do variation by shape?

I am making a map of winter coat color for several species. I have two fields: species name and winter coat color. The latter can be either white or brown, and I would like to code, say, brown winter ...
0
votes
1answer
38 views

How to subset data for whole county to just portion in particular city using ArcGIS for Desktop?

I have a shapefile of all of Riverside County. It includes parcels with and without site addresses. I do not have a city limits shapefile. How can I locate the boundary of the city that I need to ...
1
vote
1answer
44 views

Capitalizing The First Letter Of Each Word In Attribute Field QGIS

I have tried capitalizing the first letter of each string in my field/column called "COMMUNITY" by referencing this post: Capitalizing The First Letter Of Each Word In Attribute Field Particularly: ...
6
votes
4answers
348 views

Create interactive maps in R

I am a R user and quite new in GIS. From Adding Attribute data to shapefile? I know how to add/edit attribute data (say population) to shapefile using R. Now, I have some shapefiles with attribute ...
1
vote
0answers
13 views

Number a subset of entries based on current sorting

Is there a way to number a subset of entries in the attribute table based on the current sorting in Qgis? e.g. select all entries with attribute X, sort them by abttribute Y, create a new column and ...
0
votes
0answers
25 views

Annotation Conversion from into .shp file with appropriate Fonts Format in attribute table

My Drawing file (.dwg file) is contained with Annotation with Gujarati Text in many type of fonts(eg. Gujarati Saral, Nilkanth, Shruti...). After Conversion of Annotation to .shp file, Attributes are ...
3
votes
1answer
62 views

Calculate new field from existing fields using expression in gdal/ogr and append to shapefile

I'm trying to calculate a new field from existing fields based on a simple expression for a set of polygons in GDAL/OGR. The expression is basically: new field = (field 1 / field 2) * field 3 ...
2
votes
0answers
26 views

Clip raster to new column in feature? [closed]

I'm trying to clip a raster using a feature set. I'd like to then have a new value added to a column in attribute table of the feature set based on the majority of the pixels in the raster. In this ...
2
votes
1answer
30 views

How to display street names from OS StreetAny layer?

Using QGIS version 2.10.1-Pisa. I have imported layers from an Ordnance Survey data set. I have a layer called 'Street any' which gives me the boundaries of the streets which I can see. I can see ...
3
votes
1answer
43 views

QGIS 2.10.1 Copy and Paste Problem - Attributes not showing

I have two shp layers with different numbers of fields and slightly different attributes of those field, like the column name or field length. I arranged them so they are in the same order and now ...
1
vote
0answers
57 views

Attributing polygon features with names of polylines they contain using ArcGIS for Desktop? [closed]

I have a few thousand polylines that represent streams and each of the streams has a corresponding watershed polygon. Streams have "Stream Name" attribute. I needed to attribute polygons (watersheds) ...
0
votes
1answer
48 views

Transfering raster attributes to a shapefile

I am using Arc GIS 10.2. I have a raster layer and a shapefile layer. I would like to transfer the attributes of the raster layer to the shapefile layer using a majority rule. The raster layer is a ...
1
vote
1answer
21 views

Creating layer where more attributes are presented

I would like to create a layer in ArcGIS containing polylines, that are rendered by combination of more than one attribute. I can create layer where the polylines are of different thickness or ...
1
vote
1answer
49 views

QGIS information by clicking on a point?

How is it possible to open a window by clicking on a point of a point shapefile? This window should display particular attributes of the attribute table and, if somehow possible, geotagged photos. Is ...
2
votes
1answer
72 views

Is there are way to import non-geo JSON files into QGIS?

Here is a json file containing various attributes relating to countries. However, it does not contain any geographic data. http://bost.ocks.org/mike/nations/nations.json I would like to join these ...
1
vote
1answer
111 views

How do I show only the selected features from an attribute table on a layer?

One of the layers has around 5000 attribute entries, based on a CSV file of species records. All the features are of course shown on the map layer. How can I select a specific class of features so ...
2
votes
1answer
35 views

QGIS: How to scale attributes when clipping / intersecting

I'm working on a project involving a ratio of frequent travellers / population divided in Forward Sortation Areas from Canada Post (FSAs are the first three characters of a postal code: A1A). I ...
1
vote
1answer
83 views

ArcGIS Operations Dashboard: Is there a way to create a widget which counts the occurrence of a text attribute?

I am using Operations Dashboard of ArcGIS and I would like to add a widget which count the occurrence of a text value "DAMAGED" in a field ("STATE"). I only found the way to access numeric attributes, ...
0
votes
1answer
24 views

Assigning attribute values to map of city based on location picked? [closed]

I have a city map in arc GIS, with each parcel having it's own parcel number as an attribute in addition to other attributes. I need to create a second layer of the same map and add data to it based ...
1
vote
1answer
66 views

How to get features by attribute using PyQgis?

How can I get a feature's geometry from selection by attribute. For instance from a point layer I want to get the geometry by the field CODICE filter (CODICE = A001). I tried with: layer = ...
0
votes
2answers
21 views

Editing imported attributes in ArcGIS for Desktop?

I have finally completed my first ArcGIS-task, creating a shapefile containing poligons which mark designated spaces as well as installed facilities. The more than 450 facilities have a whole lot of ...