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Questions tagged [attribute-table]

A tabular set of data linked one-to-one to a set of spatial features.

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0 votes
1 answer
33 views

Fields that fill in automatically

I want to create a point layer with an ID field that fills in automatically as I digitize a geometry. It's possible? How can I do?
21 votes
3 answers
54k views

Replacing all null values from attribute table with zeros in QGIS

In QGIS 1.8 I have a new column in my attribute table with a lot of NULL values and I want to replace all them to zeros. How can I do that in field calculator?
1 vote
1 answer
352 views

Failing at using 'Zonal Statistics As Table' to calculate the number of pixels per class, for each individual area (19 total) of a classified raster

I am using ArcGIS Pro 10.2.9. I have a raster. I used a polygon feature class (19 rows of data) to clip the raster into 19 distinct areas, some of which abut each other. I classified the clipped ...
0 votes
2 answers
57 views

Removing duplicates values from QGIS Attribute table

I have some fields with the same values after that I need to remove them. Some of the values are duplicates after I merged values from different layers and grouped them using the same ID number. For ...
3 votes
3 answers
124 views

Deselecting duplicate records in QGIS Attribute table

Several SE-GIS posts describe how to identify duplicate records, such as Identifying duplicate attributes in field using QGIS. I would like to extend this concept by unselecting any duplicate records ...
0 votes
0 answers
33 views

How to make a heatmap to show the distribution of attribute values more accurately?

I want to be able to create a heatmap that shows the distribution of the attributed "carbon" value within a merged layer. I have a merged vector point layer that represents the combination ...
0 votes
0 answers
33 views

Displaying specific field values of attribute table in QGIS Print Layout

I am building a layout where I want to add the attribute table of the map and only display the maximum and minimum values of a field. I think there is the option to filter by expression but I am not ...
0 votes
2 answers
190 views

Attributes comparison in QGIS

Is there a way to compare two attributes which can not be related spatially? For example: I have a CSV file that has names of roads only, no coordinates, no geometry just names, and SHP that contains ...
1 vote
1 answer
108 views

Assigning unique ID to new points in QGIS

I want to add a new field to my feature attribute table. In this field, I want to generate a random ID (just a number, like 1, 2, 3, etc.) for every new and existing point I create on the map. This is ...
0 votes
1 answer
34 views

Graduated symbology

I have opened a delimited text file with coordinates XY defined in two columns on the file plus two other columns with data and they are represented in QGIS as a point layer. I want to symbolize the ...
0 votes
0 answers
53 views

How to keep attributes after a clipping operation in PyQGIS?

I'm trying to do a spatial clipping operation between 2 point layers, representing buildings and earthquakes, and a buffer area created by the user. The problem is that after operation, all attributes ...
2 votes
2 answers
3k views

Why is Delete Highlighted button on Attribute Table grayed out in ArcMap?

I have a few thousand points of data in one layer in ArcMap. I'm editing those points through the Attribute table and now have the data that I don't want displayed highlighted in the table. About 3.5 ...
1 vote
2 answers
497 views

Merging Attribute Table Field Values for Same File in QGIS

If multiple people populate different attributes of the same shapefile on separate computers, is there a way to merge the attribute table without creating copies of the polygons or fields? Each file ...
0 votes
1 answer
923 views

How to create 'select by attributes' feature layer when greyed out? File is a feature class (not a feature layer) and I cannot convert it

I have a subset of attributes selected from a query in 'Select by Attributes' in the Attribute Table. I want to export these selected attributes into a new layer, and am unable to do so in ArcGIS Pro (...
0 votes
1 answer
72 views

Creating a Report from selected features, using Attribute Table fields in QGIS

I am using QGIS 3 and I need to get reports from a selected feature of shapefile. This report has to include all the information of Attribute Table and if it is possible to show the selected polygon ...
2 votes
1 answer
303 views

Identify the fraction of raster cells and listing all the cell values in every polygon

In ArcGIS 10 I have a netcdf file that maps the fractions of cropland in the world from 1700 to 2007. I extracted the years that I needed as raster layer format (continuous data from 0 to 1) and now, ...
2 votes
1 answer
1k views

KMZ import does not create columns in attribute table

I would like to import a KMZ file with data on basin internal evaporation recycling into QGIS. However when I import the KMZ file into QGIS, the relevant data (Bier-jan, BIER-feb, ...) is not added ...
6 votes
1 answer
237 views

Legend and Attribute Table change throughout map composer

I'm using QGIS 2.18.3 (Las Palmas) For a project I have about 15 maps with the same extent, where each map displays a different attribute. I have followed Automating Atlas to create maps for all ...
6 votes
1 answer
715 views

QGIS 3 doesn't recognize Description from Value Map in attribute table

I have some .csv files that defines Value Maps. When I set them in the Attributes Form panel, it shows the right values and description names according to the .csv files. But as can be seen on ...
3 votes
1 answer
156 views

Calculate the substraction values fields of the nearest point between two points layers

In a heat island effect control project, I start from two point layers with the values of daytime and nighttime temperatures in degrees C: 'POINTS_DAY' 'POINTS_NIGHT' These layers contain the "...
1 vote
2 answers
3k views

Attribute Table into pandas DataFrame-PyQGIS

I'm trying to develop a plugin in QGIS. My issue is that I don't know how to transform an attribute table into a dataframe in order to use it further in run(self) function later. I also used a ...
3 votes
1 answer
134 views

QGIS - find overlapping areas between polygons and retrieve id per polygon

I'm having trouble understanding how to find overlapping areas between two polygons (using QGIS, but I'm open to coding if it's any easier), and obtain not only the output polygon, but also which ...
0 votes
1 answer
630 views

Modifying the TIFF's attribute table value with R

I use raster::raster("test.tiff", RAT = T) to read the file with the format of TIFF. The TIFF is derived from ArcGIS pro generating using Feature to Raster -> raster -> tiff. ArcGIS ...
0 votes
1 answer
31 views

QGIS: Top symbol based on comparing values across different layers

I have several layers which overlap sometimes. I want the symbol visualized on top to be based on the smaller value between the three layers. How can I do that?
0 votes
0 answers
29 views

How can I add an empty Attribute column to an existing (ESRI) shapefile (.shp) [ or a Table] and populate it with values from a Raster (Image) layer?

I have a GIS layer of Agricultural Field Boundaries (cadastral boundaries) with dozen attributes including Owner's Name, Seasonwise Crop list, etc. I want to add and store a new attribute called ...
0 votes
0 answers
79 views

How to work multiple users in the same geopackage using QGIS

I'm having a problem when multiple users have to access, manipulate or just view the same database. Sometimes the user needs to edit some information in the rows of the attribute table, or to change ...
1 vote
1 answer
541 views

qgis2web search attributes

Is it possible to query features based on attributes from the client side of qgis2web? How can this be achieved? I have a single data set that I want to serve over the web, while allowing users to ...
7 votes
2 answers
189 views

Making Autosize All Columns the default view every time attribute tables are opened in QGIS

At QGIS 3.34.6, attribute table column widths can be manually adjusted so that all values can be seen, using the Autosize dropdown: Question: How can I set QGIS so that Autosize All Columns is the ...
0 votes
1 answer
32 views

Display point labels alternatively to left and right

I am working in QGIS and I have a point layer whose labels are to be displayed left or right of the point. The formula I tried to make it work is, in label placement, selected Offset from Point mode, ...
0 votes
1 answer
209 views

Extract values hidden in a table column using ArcGIS Pro

I've obtained a KML and converted it to a points layer, but the values for each point appear to be hidden in the column In the picture, the value of interest is quantity "1.1" - I'm not ...
6 votes
2 answers
4k views

Can QGIS table editor achieve similar results to Pivot tables in Excel?

Is it possible to achieve similar results to Pivot Tables in QGIS table editor so as to use just QGIS instead of several software solutions? Or are there maybe some plugins capable of achieving those ...
2 votes
2 answers
331 views

Specifying color in ArcGIS Pro from the external text file for Attribute Table function

I am working with 16-bit signed raster image mosaic dataset in ArcGIS Pro 2.9.0. I use Attribute Table function to specify classes' names using external table: While this function works and gives me ...
0 votes
0 answers
35 views

Export attribute table to Excel without vertex-points

When exporting an attribute table the amount of vertex points (correct?) sometimes makes multiple rows in Excel. Is there a simple way to stop that?
0 votes
1 answer
525 views

st_combine and st_union produce empty attribute table for shapefile (how to edit before st_write?)

I am starting with R programming and I am having a hard time figuring out how to edit the attribute table of a shapefile after using st_combine and st_union. My shapefile has multiple polygons and I ...
0 votes
0 answers
22 views

Is it possible to start a timer and select automatically a value in QField (Attribute form from QGIS)

I'm generating a form in QGIS 3.36 for QField and wonder if there is a way to select values in a list automatically based on the time since the first point in the 'site' column was added. Basically, I'...
0 votes
1 answer
335 views

error converting shapefile to geoJSON with Ogre online tool

I am using on online tool built with ogr2ogr to convert shapefiles to geoJSON: http://ogre.adc4gis.com/ It's worked well except for one shapefile, and I can't see why... The shapefile has only six ...
0 votes
1 answer
38 views

New flow direction attribute for sub-catchment layer in QGIS

I have a polygon layer in QGIS with self-created sub-catchments. I also have a DEM, a flow-direction raster and a raster with the corresponding stream network and stream order. I would like to create ...
0 votes
4 answers
3k views

Can't save changes to attribute table in ArcGIS Pro

I have a table with over 19000 points. One of the attributes of each point is either 0 or 1. However, there are 7 points with NULL. I would like to change these NULL to 1's. When I open the Attribute ...
0 votes
0 answers
16 views

Add a frame at a fixed position in multipage report

In QGIS 3.28 I'm trying to create a multi-page report with an attribute table frame on each page. The number of pages depends on the number of points, but each should contain 40 points with some other ...
0 votes
0 answers
39 views

Changed project from QGIS 3.16 to 3.24, now 'NULL' fields turn into '-9223372036854775808'

Been working on a digitizing project on QGIS 3.16.15-Hannover, as I like to use LTR versions for the stability. But, 3.34 introduced an automatically incrementing UUID field, which I find useful. My ...
1 vote
1 answer
39 views

Expression to count related number of owners in parcel layer in QGIS

Scenario: In a polygon layer with construction details (f.e. road, construction site) and one table layer with parcel owner information. Both layers have a column with the parcel_id, because the ...
3 votes
2 answers
184 views

A suggestion on how to create a cemetery shapefile to include multiple entries in an attribute table?

I want to do a small volunteer project of a war cemetery in my hometown and to make it available to public. However, I never did this so maybe you can have some suggestions to me. The hard part I ...
4 votes
1 answer
183 views

Why is the calculated area different in the layer that was clipped with a mask

I have a mask that I created. I used calculate geometry in the attribute table to calculate the acres of the polygon (1,214,784 acres). I then used the intersect tool with the mask and another layer ...
3 votes
1 answer
286 views

How to have QGIS open attribute tables in a new window, as opposed to opening in a new tab on MacOS

I'm a fairly new QGIS user and I recently upgraded MacBooks from 2012 MacBook Pro to 2019 MacBook Pro, and thus downloaded a slightly newer version of QGIS (3.16.15-Hannover). On my old system, it ...
1 vote
0 answers
60 views

Remove all null values from attribute table and move all the other values to the left

I use ArcGIS Pro and have over 50 shapefiles. I used the Union tool to merge all the Features in one map including all the attributes. Now I have like 10.000 Features with way too many columns. On the ...
2 votes
1 answer
217 views

Deleting all non-required fields in table using ModelBuilder in ArcGIS Pro

In ArcGIS Pro I want to delete all non-required fields from a table using ModelBuilder. The number of fields will be variable since it will the product of multiple Union functions. Is there a way to ...
0 votes
1 answer
36 views

Add a supplemental attribute tables per project

I have a layer that has base attributes. I'd like to create supplemental attributes that particular to each project that base layer is used in, but doesn't affect the core data (or isn't available in ...
0 votes
0 answers
31 views

QGIS - Dropdown list for multi-select value-relation widget

Some fields in my project are currently configured using the value-relation widget. While everything is functioning correctly, my colleagues and I are used to working with the attribute table, row by ...
1 vote
1 answer
56 views

Find the longest unbroken and identical chain of a value in field

I'm working with large datasets regarding the concentration of pollutants in rivers. When the field "time" = 1 then the concentration has exceeded a certain limit for 10 mins. I need to know ...
0 votes
0 answers
36 views

QGIS vector layer attribute table update using CSV - JOIN not working

I have an existing vector layer which I have added features to and updated the geometry existing features. The associated attribute table has 34 FIELDS (with 25 features). I'm trying to undertake a ...

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