Questions tagged [list]
Linear collection of items
268 questions
2
votes
1
answer
67
views
Sorting Recently Used Coordinate Reference Systems list in QGIS
I want to sort alphabetically all CRSs in the Recently Used Coordinate Reference Systems list in QGIS. But I can't find a way to do this using the user interface.
How one can sort them using PyQGIS?
- 8,208
0
votes
1
answer
25
views
GEE type casting / list creation and access to list-of-lists
I have difficulty in working (interchangeably) between client-side and server-side variables in GEE.
I have two lists (defined as client-side variables) :
var color_lst = ['604791', 'F648F1', '39a8a7']...
0
votes
1
answer
39
views
GEE: casting confusionmatrix as list
After reading this question and the corresponding answer, I tried to get a confusion matrix produced by GEE random forrest classifier and turn it into a good looking table. I realized that GEE has a ...
0
votes
1
answer
150
views
Transforming R data.frame with column of GeoJSON strings into sf object
Suppose I have a data.frame object that has a column called geojson with GeoJSON strings in each row.
How can I transform this data.frame into an sf object that would allow me to perform geospatial ...
- 2,749
0
votes
0
answers
32
views
How to create a field with a list of neighboring residential lots in QGIS?
I need to create a field with a list containing the 'name' information of the geometries that intersect each of the existing geometries. They are residential lots, and I need to list the adjacent ones....
-1
votes
1
answer
40
views
GEE: List operation and conditioning
I have a list of features containing two Polygons that belong to a MultiPolygon feature:
var polygon_lst = ee.Feature(MP_feat).geometry().coordinates(); //MP_feat is a MultiPolygon
I want to take ...
0
votes
1
answer
29
views
Error exporting the mean of an Image List (of 173 Elements)
I am trying to export the LST mean for a period of time. I converted the Image collection I had to a List, but I cannot calculate the mean of all the elements within the List so there is only 1 image ...
1
vote
1
answer
30
views
Indexing error in list in gee [is not a function)
how do I access an element from a index. I have created a list with feature and I want to access them and I am using .get function. However after getting .get it is returning error that it is not a ...
- 11
0
votes
1
answer
44
views
Exporting pixel value of a dataset
I'm trying to export the value of a dataset for each pixel.
I made it this way :
var chloa_4kmOnly = chloa_4km.select("Chloa_OC3").clip(geometry)
print(chloa_4kmOnly)
var chloaFeatures = ee....
0
votes
1
answer
157
views
Expected type : List<element> Actual type ; List<Float>
I'm facing an issue while extracting each pixel value of a band:
And here's the code I'm using :
var chloaFeatures = ee.FeatureCollection(ee.List(chloa_4kmOnly
.reduceRegion({
reducer : ee....
1
vote
1
answer
254
views
Raster is being saved with no bands names despite defining them using Rasterio
I have an ndarray which I would like to save as rasterio raster.
I have all the information I needed (image size, transform, band names etc.).
The problem is that when I try to save the image as ...
- 2,215
3
votes
1
answer
156
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
2
answers
205
views
Export List of lists as a FeatureCollection (CSV) in GEE
I need to export CSV but my input is a list of lists so I have an error "FeatureCollection (Error)
List.get: Parameter 'list' is required." How can I change my input data? Or the export mode?...
- 31
2
votes
1
answer
254
views
Fastest way to retrieve raster layers for a given year from a list of SpatRaster objects and to calculate the mean across these layers
I am creating a function to retrieve raster layers for a given year from a list of SpatRaster objects and to calculate the mean across these layers. Each SpatRaster has 94 raster layers. The problem ...
- 23
0
votes
1
answer
57
views
Insert missing features by comparing multiple fields
I have two separate layers, I need to update one layer if the features are not in the other layer. I was thinking of using two fields to compare both features and if missing use insert, to insert it.
...
- 11
9
votes
1
answer
951
views
Exporting list-type field using GeoPandas
I have a GeoDataFrame whose a column is list-type.
import geopandas as gpd
gdf = gpd.GeoDataFrame({'list': [[0,1]]}, geometry=[Point(0, 0)])
print(gdf)
# OUT:
# list geometry
# ...
- 78k
0
votes
1
answer
241
views
Creating list of yearly collections in GEE (Python API)
I'm using GEE (Python API): I have a multi-year image collection and I'm trying to simply create a list, in which each element contains a yearly Image Collection. I've prototyped it with one year, and ...
0
votes
1
answer
107
views
List the field contents of manually selected rows in a table, Arcpy [closed]
I use ArcGis Desktop 10.8 and I try to create a tool with arcpy, but I got stuck on a part:
There are several shp files with several date column names, the column names vary depending on which shp ...
- 91
1
vote
1
answer
158
views
Formatting data so it can appear as a List indicator in AGOL Dashboard
Below is an example of what My List element looks like in AGOL Dashboards
My data exists in individual cells and is seperated by ';'. I am trying to get the List indicator to show that after every ';'...
- 83
0
votes
1
answer
315
views
List the fields for every shapefile I have stored in a list
I am trying to list the fields for every shapefile in 2 lists I have created to prove that each shapefile with the correct projection/feature type within one of the lists got X, Y coordinates added to ...
- 33
2
votes
2
answers
346
views
Identify and move data containing special characters to a separate column
My dataset contains special characters. I want to identify the data which contains special characters and separate it into a new column.
List of special characters :
`~!@#$%^&*_{}[]<>?/
...
- 849
1
vote
3
answers
797
views
Listing feature classes from multiple feature datasets in GDB
I am trying to list all feature classes from multiple datasets with single GDB. I have tried with below code
import arcpy
from arcpy import env
env.workspace = r"C:\GDB\Base.gdb"
fdlist = ...
- 165
0
votes
2
answers
337
views
Double indexing and looping over raster lists in R
I have a list of 63 rasters. They are the same extent, resolution, projection, etc. Because I extended 62 rasters to the maximum extent of the 63rd, I introduced NA values. However, these are relative ...
- 51
3
votes
1
answer
84
views
QField - how to show features list in alphabetical order?
I created a project in QGIS and synced it to QField. When I ask qfield to show a features list of a point layer from the project the names are not in alphabetical order. Is there a way to ...
- 31
4
votes
1
answer
446
views
Translating array into list or map and back in QGIS
Arrays in QGIS look like:
[ 'WID00037-LDB', 'WID00027-LDB', 'WID00026-LDB' ]
This kind of List or Map generated by QGIS Value-Relation Widget look like this:
{ "WID00037-LDB", "...
- 8,396
0
votes
1
answer
931
views
Extract coordinates out of list() in R
I have a data.frame with a column called geo. In this column, there are lists with coordinates that used to represent bounding boxes. I would like to grab the coordinates that are inside each list and ...
- 117
0
votes
1
answer
1k
views
How to set a property for an image in a list in Google Earth Engine?
Based on the answer here: How to set multiple values in list in Google Earth Engine?
I'm trying to change the property of images in a list that had been an image collection before converting to list.
...
- 377
1
vote
0
answers
175
views
How to fix list brackets for list of coordinates [closed]
I am trying to populate an empty list with pairs of coordinates taken from a dictionary of pairs of coordinates.
Here is my code that is creating this list:
#Skip shorter rows
if ...
- 21
0
votes
0
answers
653
views
Shapely 2.0 from list of polygons to multipolygons
I have a geoJson file that contains some Regions boundaries. Based on this answer I made the following code to transform the boundaries coordinates into a MultiPolygon Shapely object.
import json
from ...
- 137
2
votes
1
answer
418
views
Filtering points appearing in list of convex hull polygons
I have two DataFrames df & df1:
df: containing latitude, longitude, and binary cluster (0 or 1)
latitude Longitude cluster
30.400091 -100.722830 0
30.500091 -100.762830 0
30.600091 ...
- 51
1
vote
0
answers
105
views
List Feature Classes print blank
I will write a script that must iterate through the subfolders in the PPA folder, and to iterate through the subfolders, I need to reset and list workspaces (there are two folders under PPA named ...
- 11
0
votes
1
answer
301
views
Iterating over GEE cloud assets in JavaScript produces "undefined"
I'm trying to to make my javascript Google Earth Engine code iterable, in the sense that I run the code once and it iterates through all of my cloud assets in a given folder. Each cloud asset ...
- 425
0
votes
1
answer
475
views
Adding list to Image Properties using Google Earth Engine JavaScript API
I am trying to iterate through an image collection and add a property to each image that is taken from a list. For example I want image 1 in the collection to have the property list item 1.
I first ...
1
vote
1
answer
50
views
Get specific rasters (with date string in rasternames) from FGDB in to the list
I have a FGDB with many rasters. The raster name contains date at the end(YYYYMMDD). See example rasters bellow. I can get all rasters in to the list with wildcard. That is not the issue. I want to ...
- 111
-1
votes
1
answer
2k
views
Convert list of XY-coordinates into GeoJSON/Polygon geometry [closed]
From API-responce I get a long list of XY-coordinates of vertices where each coordinate is separated by comma. How can I transform this list into GeoJSON/Polygon geometry?
,"shape":[52....
- 607
1
vote
1
answer
203
views
Why arcpy.ListRasters() returns three lists?
My folder has three TIFFs.
But when I use arcpy.ListRasters, it gives three lists that contain nine TIFFs.
Why it doesn't give one list containing three TIFFs?
import arcpy
arcpy.env.workspace = &...
- 319
1
vote
0
answers
86
views
Find the average of pairs with the same first element in FME
I have a list of pairs in FME:
and need to calculate the average of each set of pairs with the same first element.
I came up with this code, but it takes a lot of time to paste and copy the list. Is ...
- 11
1
vote
1
answer
1k
views
Convert a List into Feature Collection in Google Earth Engine
I'm trying to convert a list into a Feature Collection in Google Earth Engine in order to export as CSV file. I'm getting this error
FeatureCollection (Error)
Collection, argument 'features': Invalid ...
5
votes
2
answers
1k
views
Getting list of values from column in QGIS
I have one "column D" with a b c values for my entities (1-2-3-4).
Something like that :
1. b
2. c
3. c
4. e
5. j
6. b
I would like to generate a list of each different value of "...
- 577
6
votes
3
answers
6k
views
Extracting latitude and longitude pairs as list from LineString in GeoPandas
I have a GeoPandas GeoDataFrame that looks like this:
shape_id geometry
1000252 LINESTRING (4.91790 52.34725, 4.91797 52.34715...
1000254 LINESTRING (4.80382 52.34495, 4.80413 52.34500...
...
- 195
0
votes
1
answer
230
views
Using values of a groups of objects to create an image in GEE
I have calculated the 90th percentile for each class of land cover using the reducer ee.Reducer.percentile([90]).group
The result is a group of objects and I don’t know how to use it.
I would like to ...
0
votes
1
answer
236
views
How can I solve MemoryError if I have big list in my Arcpy code?
I have a script and I have a huge list.
Because of this list, I got memory error in line 93 when the value of scale variable is 10000 in line 45.
This list is empty_list in line 28. I tried to convert ...
- 1
1
vote
1
answer
424
views
projectRaster on a list of rasters
I have two raster layers in a list format called myrasterlist that differ in extent and crs. The list looks like this:
[[1]]
class : RasterLayer
dimensions : 540, 537, 289980 (nrow, ncol, ncell)...
- 181
2
votes
1
answer
328
views
Array (Error) Array: Unrecognized type, may only use numbers or lists, found type Array
I am getting this error when trying to subtract the array with its mean value in Google Earth Engine JavaScript API
var from = ee.Array([2,3])
var meann = from.reduce(ee.Reducer.mean(),[0])
var to = ...
3
votes
2
answers
2k
views
How to use a list with spatial dataframes in a for loop? - R
I have three spatial dataframes (polygons), created via this tutorial. The three spatial dataframes must be exported as shapefiles via a for loop. I created a list polygons containing the three ...
- 195
1
vote
0
answers
125
views
Report a listing of some fields from attribute table
QGIS 3.22.4
For working purposes, I want to have a listing of some attributes in a shapefile (line), and have those information as a listing (multiple line per page). No geographic dat (maps,...) ...
- 630
6
votes
2
answers
332
views
Writing list as attribute field in PyQGIS
This answer got me close https://gis.stackexchange.com/a/286780/204059, but I only get the last value of my list for all object fields.
Example: My list = [REL_1, REL_2, REL_3]. My layer has three ...
- 89
2
votes
1
answer
1k
views
How to open a list of images from an asset as an Image Collection?
I need to create an Image collection from a list of images that I import from an asset in GEE. This is the code I am using:
//THE CREATION OF A IMAGECOLLECTION WORKS WITH TWO IMAGES LOADED HERE
var ...
- 616
0
votes
1
answer
2k
views
Trying to Call a List From a Function within one Class to Another Class
I have an Python Toolbox script that contains two classes/tools. I want it so that the user inputs the data into the first class and then the second class will handle the processing.
How can I write ...
- 1
2
votes
1
answer
1k
views
How can I select features in the attribute table of a layer in QGIS from a list? [closed]
I have ~5000 features in a layer in QGIS. Each feature has a unique ID. I have a list of ~800 features (with corresponding IDs) I would like to select and remove from the layer. Which expression ...
- 21