Questions tagged [cell-size]

Cell size, also know as resolution, is the size of each individual cell, or square, on an image.

13 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
350 views

Create a grid in R, change in cell size displaces position of grid

I'm writing R script which will allow users to overlay a grid on their data in a new projection with the option of defining the size of the grid cell. This seems to work fine, however, when I plot two ...
2
votes
0answers
141 views

Batch process aligning multiple rasters in QGIS

I would like to know if there´s a way to run a batch process that consists in aligning (changing cell size from 10 to 20 in Sentinel 2 imagery) in QGIS 3.4? I need to resample band #8 (resolution 10m)...
1
vote
0answers
26 views

Non-square raster pixels created during TIN Interpolation?

I am trying to create a raster by using the TIN Interpolation tool in QGIS. I'm using a 3D polygon shapefile as input. I'm looking to create a raster of square pixels, although despite specifying a ...
1
vote
0answers
244 views

Find closest points using S2, given point and radius

I'm trying to use the go s2 package to find closest points, given a point and a radius (meters). I'm modeling my alg. after dynamodb-geo.js as I'm storing my points in DyanmoDB. I can't seem to get ...
0
votes
0answers
22 views

Resampling for cellsize when exporting raster to GeoTIFF - GM

I used Global Mapper v20.0 for exporting the raster image GeoTIFF (32bit, from cellsize x= 0.008333333333000000898 arcdegree, y= 0.008333333332999999163 arcdegree) to cellsize x= 0....
0
votes
0answers
34 views

Equalize number of columns and rows number with different raster data which was taken from different sources

I am interested in creating a flood map using machine learning methods. I need the same number of columns and rows for each raster data or layer. However, although I used the same boundaries for ...
0
votes
0answers
21 views

r.walk issues in GRASS

I have been doing the r.walk analysis but fail to generate the result. The movement direction map and walking cost map from stop points is extremely small, limited to a 3x3 or 5x5 square. Does anyone ...
0
votes
0answers
23 views

Viewshed: why does a larger input cell size result in a larger viewshed area?

At Arc Desktop 10.7.1 I am conducting a viewshed analysis using the Viewshed tool. I am trying to understand how the input raster cell size affects the area covered by the output viewshed raster. ...
0
votes
0answers
64 views

Raster pixel size in QGIS automatically defaults to square

I am using QGIS 3.4 and my data consists of rasters with irregular cell sizes. In ArcGIS Pro, the cell sizes are maintained (screenshot below). However, when I upload the same raster into QGIS, ...
0
votes
0answers
93 views

How to change raster cell size WITHOUT resampling? (ArcGIS Pro)

I have hundreds of rasters, all with different rectangular cell sizes. I need to convert the pixels to be square, since I will be using a variety of Spatial Analyst tools such as Raster Calculator. ...
0
votes
1answer
139 views

Clip to mask layer not adhering to expected width and height following CRM and resolution changes

I am attempting to take a simple opentopo heightmap and carry out the following in QGIS 3.4.1 - Reproject to UTM 31N - Set cell size resolution to 5mtr - Clip to a shapefile polygon feature exactly ...
0
votes
0answers
34 views

Extraction by mask using a polygon changes the cell counts on each category?

I am attempting to use Extraction by Mask on a raster set (land use) to gather the cell counts of each category. The data is from a county level and the polygon I am using is a specific city within ...
-2
votes
1answer
33 views

SAGA RESAMPLING SYNTAX

How can I solve the problem shown below: I am trying to build a plugin that allows me to resample the raster data to any desired resolution of my choice with 20 being the minimum input value, as ...