All Questions
Tagged with values fields-attributes
11
questions
1
vote
1
answer
37
views
I can't update any attribute values in PyQGIS
I've been using PyQGIS for a few of weeks. I'd write a script which shows all earthshakes responding to given parameters, so I wrote this code:
from PyQt5.QtGui import *
from PyQt5.QtCore import ...
- 11
1
vote
1
answer
86
views
QGIS 3.22.16 Bialowieza. Selecting matching value in 2 fields
I am using QGIS 3.22.16, I try to select similar 'null' value in 2 different field. I tried the solutions suggested from one this exchange.
Selecting features with equal values in different fields in ...
- 321
1
vote
0
answers
21
views
Alternate view to normal view in attribute table [closed]
I have somehow accidentally changed how my attribute table looks and I dont know how to get it to go back to the original state has anyone any idea how to change?
- 11
3
votes
1
answer
1k
views
How to create a Value Map widget type to select multiple values (checklist) from the dropdown?
I have a polygon layer that represents tree/shrub planting sites that were done. As part of the attribute table, I have fields representing things like tree density, species, soil work, tree size, etc....
- 43
8
votes
2
answers
2k
views
Finding the minimum value of different columns in QGIS
I'll try to calculate the minimum value of four different columns in my QGIS table like:
The min. value would be 1,50286 in the first row.
Is there any expression or tool to find the minimum value ...
- 183
3
votes
1
answer
162
views
Creating buffers with values, and finding areas with high value overlap of these buffers
I'm working on a project where, essentially, I'm measuring threat levels based on geospatial patterns. I have different groups with higher or lower threat levels based on the distance from their ...
- 31
2
votes
1
answer
99
views
Returning attribute values without additional characters
I have this part of code inside of a plugin:
Emptylist = []
def saveToList(self, layer, EmptyList):
for feat in layer.selectedFeatures():
attributes = feat[self.pgLyr.currentText()...
- 1,220
1
vote
2
answers
117
views
Correlating number values with text values from different fields in ArcMap?
I need to create a vector layer for representing the geology of an area. I have the geological map, a raster file.
I made some polygons and I named them in the attribute table, but I don`t want to ...
- 77
11
votes
1
answer
2k
views
Creating predefined values in field using PyQGIS
I would like to make programmatically (with Python) the same thing than we can do directly in QGIS when you create a list of values for a field.
I would like to create a new field and specify a list ...
- 557
3
votes
0
answers
106
views
Reading row values instead of field values with PyQGIS
I use this piece of code to read the values of fields:
lyr = iface.activeLayer()
features = lyr.getFeatures()
for feat in features:
attrs = feat.attributes()
print attrs[1]
How can I read ...
- 31
28
votes
3
answers
58k
views
Reading attribute values using PyQGIS
What is the way to get the information contained in the attribute table, say in column 2, row 2 using PyQGIS?
- 299