Questions tagged [summarizing]
The summarizing tag has no usage guidance.
134
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Summing equal geometries with identical columns in QGIS
I have two vector layers with line geometries which share column names. The one is a subset of the other, and even though they share the same columns, they differ in their values.
I would now like to ...
- 1,753
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Update summary statistics columns using field calculator
I want to update 2 columns, which were made by summarizing field values in the first column (WEQ) based on spatial location. The summarized field (WEQ) has been updated using the field calculator, but ...
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Calculating sum of Euclidian distances from one point to multiple points within buffer in QGIS
I want to calculate the sum of the inverse distances from one main point to multiple other points within a buffer around the main point in QGIS
I have a point file with multiple home addresses (red ...
- 33
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Calculation surface area for every cells [duplicate]
Surface area= Plan area /cosine (in Radian) slope.
I used cell plan area by multiplying cell size for example 12,5*12,5=156,25square meters
Surface Area = 156,25/cosine slope
result became surface ...
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75
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QGIS aggregate intersects points in polygon by filtering values
I have in QGIS 3.28 points and polygon layer.
I want to create virtual field that SUM on the point layer all the specific values the points intersecting in the polygon that are filtered according to ...
- 464
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QGIS Summing attributes of polygons contained inside region polygons. Some share boundaries. Intersection gets unwanted neighbors
So I am trying to sum up populations from a census polygons layer into a region polygon layer. Now I want to sum up the total population contained in each region polygon (A & B).
Here's the ...
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549
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Summing attribute values along line layer in direction: accumulating the attribute values of side lines in QGIS
I want to sum up the attribute values from a line layer along another line layer in QGIS in a direction:
The values from the orange line should be summed up along the red line, which is divided into ...
- 115
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Calculating individual Sum of multiple fields
I am trying to calculate the sum in each field in my list:
Cost_Adders = ["RR_CROSSING", "INTERSTATE", "RIVER"]
for Cost in Cost_Adders:
where = f"Cost_Adders = {...
- 13
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144
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Partial and Total Sum in one table (QGIS print composer)
In QGIS 3.22.14, I'd like to present in the print composer a sub- and total sum in one table. The values in the attribute table can be anything (area, count, etc.), the key is to present them in one ...
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78
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Summarize Within Returns with zero values
I am trying to summarize the areas of tree canopies (almost 2.3 million records) within each each city (Multipart). The tools runs without error, however the columns of interest are empty.
How can ...
- 1,184
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Expression to calculate sum in QGIS Attribute table
There is a shapefile about facilities with columns "country" and "annual production".
I am looking for an expression for a calc field to summarize total production for all ...
- 385
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122
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How to sum the values of two collections in Google Earth Engine?
I'm using GLDAS image collection in Google Earth Engine, and what a want is to sum four bands for a specific time like 10 years, and to obtain a collection with the sum date by date of the four bands:
...
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247
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How to create a dynamic label for a polygon layer that sums line length and other attributes of another linestring layer
For an agroforestry design in QGIS I am trying to add dynamic labels to an area polygon that displays the number of rows, total length and the total number of trees that are in the design.
So far I ...
- 91
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249
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Summing values of different layers based on another
I have a layer (called here 'layer_top') made of multiple polygons (in orange in the picture). Each polygon of the 'layer_top' overlaps with polygons of other different layers (called here 1,2,3,...). ...
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Summing on multiple attribute value on same coordinate in QGIS
I have data like this:
If we see clearly then there is same data in same coordinate, now I am doing manually like this picture which is very time-consuming.
How can do it easily in QGIS?
- 151