Questions tagged [fields-attributes]
Fields, also known as attributes, contain information about features.
1,836
questions
7
votes
1
answer
155
views
Auto incremental field filled with filtered by other field value in QGIS Attribute Form
From a point geometry layer with two categories "A" and "B", when I enter new points, I first choose the category of the "CATEG" field with a listbox, and then I use the ...
- 1,441
8
votes
1
answer
80
views
Using attributes tables as variables in QGIS
I work for a company where we use the same file when starting a project, with all the print layouts already configured, including the names/themes of the maps, since we usually need the same themes. ...
- 177
1
vote
1
answer
60
views
Changing Widget type to 'Unique Values' and making it editable using PyQGIS
I'm new to the QGIS software and am attempting to change the widget type to 'Unique Value' (by default, it's 'Text Edit') using PyQGIS.
I have more than 20 fields in a layer for which I want to set ...
1
vote
0
answers
39
views
QGIS crashes when running Action to create new field
I made a layer style with a python action with following code :
def add_field(field_name, layer, field_type=QVariant.Invalid, field_length=0, field_precision=0, value=None, from_field=False):
if ...
- 1,097
0
votes
0
answers
23
views
Unable to bring up attributes for a feature
When I select the layer in question as the only selectable layer, I am able to use Open Attribute Table and open the attribute table for the entire layer. However, when I right click a feature in the ...
0
votes
1
answer
44
views
Sequential attributes of snapped lines
I'm a stormwater engineer using QGIS and I need to do some mapping of ~2000 stormwater pipes. As part of this I need to assign unique pipe identifiers to each pipe with each pipe system labelled in ...
- 9
4
votes
1
answer
96
views
Getting only joined fields using PyQGIS
How do I get a list of fields that have been joined to a layer, or how can I check if a specific field has been joined?
In older versions there seemed to be field.source(), but this is not available ...
- 6,617
0
votes
0
answers
26
views
All values entered using fields with a list of values are transformed into (0)
All values entered using fields with a list of values are transformed into (0) how can we find back the selected values, we lost a lot of work and can't find backups.
- 1
2
votes
1
answer
82
views
Matching specific word character in QGIS Graphical Modeller
With the graphical modeller, I try to decode a set of codes:
Since the code '_zie' is also contained in the code '_p_zie', I get two matches for '_p_zie'.
How can I get two specific Word characters ...
- 185
0
votes
1
answer
53
views
QGIS - I cannot add attributes to a line segment [closed]
I am trying to add the name of a polygon (an attribute called "member") that the line segment falls within, so that a field called member is added to the line file and it is filled with the ...
- 17
0
votes
0
answers
26
views
Creating a MultiPolygon field that includes multiple
I have been tasked with creating a new polygon layer to include lat/long of atleast 5 vertices. I have a sample of the fields of another customer they work with and I cannot seem to find out anywhere ...
- 1
0
votes
1
answer
19
views
Creating line feature with multiple record
I am trying to create line feature with multiple record in ArcGIS 10.8. Actually I am working on FTTH project there I need to draw 12 f fiber which single cable contains 12 separate threads in it and ...
2
votes
1
answer
125
views
How to replicate QGIS's Identify Features functionality with ogr2ogr when downloading data from WFS endpoint?
I am working with this WFS endpoint:
https://wxs-gpu.mongeoportail.ign.fr/externe/39wtxmgtn23okfbbs1al2lz3/wfs
In QGIS, I do: Layer -> Add Layer -> Add WFS Layer..., then add the above endpoint. ...
- 1,540
1
vote
1
answer
43
views
Query - Select By Attribute
I have contour data of 1 foot contours. How do I write a select by attribute query to only select 10 foot intervals. ie: 750, 760, 770, 780......
Than data range is between 10ft and 900ft, est. So I ...
- 13
0
votes
1
answer
82
views
How to display in QGIS Map Tips an image with absolute path written in the layer? [duplicate]
I am trying to display the images of a layer with the "map tip" function.
The absolute path of each picture (D:\ ... \ ...\...jpg) is written in a field called "path".
I tried to ...
- 65
1
vote
1
answer
50
views
How to set a "main field" of a layer in QGIS interface (instead UUID)?
I have a layer inserted in QGIS.
When I select/interact various elements together, to distinguish them the interface offers me grouping by UUID which is the primary key.
Of course I want UUID to ...
- 65
1
vote
3
answers
43
views
Script field calculation Python parser
I am trying to use the field calculator to create an alphanumeric sequence, I tried to write a statement but I don't know what is wrong.
So my sequence would be in a field called "Field_number&...
- 11
3
votes
2
answers
144
views
Change specific text and keep the rest
I have field values that are:
OG_S_G4,
OG_S_G3,
OG_S_G2, etc.
and I want to change the OG to LIP whilst keeping all the text after (i.e. LIP_S_G4), is there a way to do this?
- 31
0
votes
1
answer
40
views
QGIS Split Vector Layer By Multiple Attributes
I am working on a fiber network file and would like to be able to split a point shapefile by multiple attributes, three to be exact. I can "Select Features by Value" and export each one but ...
0
votes
1
answer
58
views
Copying an attribute field from a polygon to a polyline
Is there a GP tool in ArcGIS Pro to copy a date field from a polygon feature class to a polyline feature class? I cannot use the join tool because there are no common fields after running the polygon ...
- 573
0
votes
0
answers
22
views
Adjusting number of visible items in multiple-select list
We created a value relation widget in our project, which contains many different selectable options. However, only 5 out of 25 options can be seen at once (see attached photo). Is there a way to ...
1
vote
0
answers
21
views
Splitting a point vector based on a date attribute within the QGIS Graphical Modeler
I have now a model which processes two layers of points corresponding to observations at 'Time_1' and 'Time_2'. It counts the observation per quadrats in a grid and obtains two outputs: a grid with ...
3
votes
1
answer
91
views
Calculating field with input from two layers in QGIS Graphical Modeler
Even though I found similar questions, I couldn't find a suitable answer for the problem I have.
I want to create a model that calculates the difference between two fields ("NUMPOINTS") from ...
0
votes
0
answers
68
views
Feature to Polygon in ArcGIS Pro: attribute missing although Preserve attributes is checked and feature labels are provided
I try to follow the suggestion given in an equal case in ArcGIS Desktop, however, I do not end up with the desired result. I start with the Shapefile Feature Class lgm_3_contour_edit.shp of Geometry ...
- 445
4
votes
1
answer
77
views
All fields recognised as String when importing CSV with CSVT in QGIS
I am trying to import data contained in a CSV file Chomage 1975.csv, with a CSVT file Chomage 1975.csvt in the same folder.
My CSV file content is:
Code;City Name;Unemployment rate 15 years and over ...
- 95
2
votes
2
answers
105
views
Update field automatically when adding a new entity
I am trying to automatically update the content of several fields, when the first one is completed.
If the value in the first field is not found, then nothing. But if the value is found, then the ...
- 489
0
votes
1
answer
31
views
Copy active field configuration in ArcGIS Pro
I am working with ArcGIS Pro 2.9.
I have a map with several layers that point to the same source. I want to know how to copy the active field configuration from one layer to the others, because there ...
- 533
7
votes
2
answers
224
views
Adding metadata that describes each attribute field in QGIS
Using a GeoPackage layer at 3.28.9, I would like to add descriptive information for each of the layer's attribute fields as metadata. However, there is no Layer Properties > Metadata tab for ...
- 8,104
0
votes
1
answer
31
views
Placing text into cells in number field using ArcMap
I'm using ArcGIS Desktop 10.8.2. I have an attribute table with a long integer field, but I have a few cells in this field without values. I want to put "N/A" in these cells. So, the ...
- 1
1
vote
0
answers
70
views
Calculating the surface area of the ocean at each latitude
I am trying to get the surface area of the ocean at each 1° latitude slice. However, for some unknown reason, region -61 which is at latitude -61 has a negative number, and am not sure why that is the ...
- 11
1
vote
1
answer
61
views
Using widgets multiple times in QGIS form independently
I am using QGIS to set up a Form to collect data using QField.
The form is to use Containers with similar Widgets such as Date and Photo.
If I use the same Date widget in two separate containers, they ...
- 21
1
vote
1
answer
44
views
Assigning new values based on the field calculator and "case when then" in QGIS
I would like to do conditioning in the attribute table consisting of the following action:
CASE WHEN "network" = icn_ref THEN '001|' ELSE '' END
|| CASE WHEN "network" = ncn THEN ...
- 11
3
votes
2
answers
128
views
How to label the highest value comparing different fields by suffix name in QGIS
Based on a layer with point geometry with the following fields:
res_1_name
res_1_perc
res_2_name
res_2_perc
res_3_name
res_3_perc
How could I automate that the 'res_name' field that has the highest ...
- 1,441
4
votes
1
answer
99
views
Using get_feature function with attribute in QGIS
I am trying to wrap a get_feature with an attribute expression to perform the equivalent of a VLOOKUP in Excel. Using the form below I get a NULL result.
attribute(get_feature('pointst', 'when', ...
- 1,565
3
votes
1
answer
68
views
AttributeError when creating list field with QVariant in QgsVectorLayer using PyQGIS
I am trying to create a list-type field for the active layer using the code below, which is not working.
Is there any other way to create a list-type field and update the list([1,2,3]) as an attribute ...
- 39
1
vote
0
answers
63
views
Separating data in name field so it can be filtered in QGIS
I have some information that I want to filter by some of the fields under the primary name field for ex: "gs_substation" or "gs_feeder_number". But they are unable to be filtered ...
- 11
0
votes
1
answer
69
views
QField conditional visibility in forms doesn't work in the mobile
I've been trying to make a field mapping project using QField.
I've developed attribute forms with drag and drop designer.
I have 5 tabs so far.
1.Meta data 2. Lithology 3. Structure 4. Notes 5. ...
- 1
1
vote
1
answer
41
views
Getting selected attributes from line layer to polygon layer in QGIS
I am trying to get specific attributes from a line layer to a polygon layer. The line layer contains a number of pipes that run through a polygon (parcel). They both have the parcel number in common:
...
- 191
4
votes
3
answers
220
views
Labeling layer with two attributes in QGIS
I use the QGIS version 3.28.4-Firenze and I have the following question:
How can I label a polygon layer with two attributes, where the two attribute labels should look different (color, shape, size) ...
- 41
0
votes
0
answers
31
views
Trying to save a raster with only field information
I'm fairly new to all GIS.
I am using the Wise30secfin.ovr file which has prepopulated fields in an attribute table. I want to make a raster with the values from only one field, but every time I try ...
- 1
1
vote
0
answers
13
views
Setting numeric values in new field based on length and branches in QGIS
I'd like to know how to set incremental numeric values in a new field of a layer, which has been obtained by "shortest path from point to layer", based on the length and the branches. I need ...
- 935
1
vote
0
answers
41
views
Grouping points within counties and symbolizing their data as pie charts in QGIS
I need to combine/categorize points within different polygons while retaining some of their values. I've made up a scenario to try and simplify my problem.
The layers I have to work with are a point ...
- 19
1
vote
1
answer
58
views
Duplicating certain features based on symbol in QGIS Attribute table
In QGIS 3.28.8 I have downloaded the data for power lines in different parts of Germany from OSM. Some of these lines and cables have different voltages (see below). I can filter those with several ...
- 51
2
votes
0
answers
73
views
Returning field value based on expression on another field using QGIS expression
I want to return the value from one field ("Number") for the feature with the most recent timestamp ("Time") from within the current layer ('mylayer'). Or what's the number of the ...
- 1,565
1
vote
0
answers
60
views
Changing number to bigger than 999 in QGIS
In QGIS 3.28 on Windows, there is a shapefile originally created in QGIS that was imported and worked on in ArcGIS.
Now, when I reopen the file in QGIS, the real numbers have a width of 18 instead of ...
- 1,105
0
votes
0
answers
101
views
Get checkbox for Boolean field in attribute table
I have a dataset with a lot of Boolean fields.
In the attribute table, they are represented with text (either true oder false). If I click into the cell, I get the checkbox I also get in the attribute ...
- 659
2
votes
1
answer
174
views
Concatenating field names if value is true using QGIS expression
I have multiple boolean fields. I want to create a new string field, that is concatenating the field names of my existing fields when their value is true. I want the names separated by a comma.
I am ...
- 659
1
vote
1
answer
79
views
Filtering string column with datetime in PyQGIS
I have a CSV in QGIS and one of the columns is "Data/Hora GPS" with the DateTime in format (day/month/year hour:minute:second), in the field calculator I used the expression for filter:
...
- 19
3
votes
2
answers
96
views
Deleting contents of all entries in field in QGIS Attribute table
In QGIS, how can you delete all of the entries in a field in an attribute table? If you go to a particular entry in a field, you can delete that entry, but how can you delete all of the entries in the ...
- 415
-1
votes
1
answer
116
views
Converting string variable to number format without creating new variable using Field Calculator in QGIS
I have many variables which are of type string but contain in fact numbers.
In QGIS you can convert those strings to numbers by creating a new variable with the wanted numeric type (e.g. integer or ...
- 1,105