To alter the frequency of sampled data points in continuous data.

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5 views

Choosing georeference parameters? [on hold]

In using QGIS's georeferencer, I must choose the "transformation type" and the "resampling method". Can you direct me to a good, understandable discussion on how to choose these parameters for ...
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0answers
12 views

Is Output Cell Size Environment the same as Resample tool?

I have a raster catalog that contains hundreds of rasters (10 x 10). I need to perform Cell Statistics SUM on all the raster. End user able to specify under what cell size the want to perform the ...
1
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0answers
10 views

Snap do not perform resample

I try to resample a sentinel 2a image in 10m resolution and I get the following error message java.lang.RuntimeException: Cannot construct DataBuffer. at com.sun.media.jai.util.DataBufferUtils....
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1answer
32 views

Resampling Landsat 8 band 8 to 30m resolution (to same res as other bands)

I'm running a script in Matlab where I need to compare different Landsat 8 bands. The matrices of each band must match up, but I'm using band 8 which is at double the resolution of the others, and ...
2
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1answer
29 views

Spatial resolution for Bioclim datasets

I am new in using Bioclim datasets. I want to model future spread of Prosopis juliflora using landsat 30m. I want to add other datasets like temperature, ppt, elevation, soil moisture, pH, etc. Any ...
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1answer
28 views

How I can resample raster data infrom 10 meters to 20 meters resolution in ArcMap?

I downloaded Sentinel 2A satellite images and some bands are in 10x10 resolution and some bands are in 20x20 meters resolution. I would like to convert bands with 10x10 spatial resolution to 20x20 ...
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1answer
37 views

ArcGIS Resample Tool Crashes with “Not implemented”

I'm trying to run the Resample GP tool with a mosaic dataset as an input. The mosaic dataset contains a raster for Peru, the Democratic Republic of Congo, and Indonesia. Each raster is in WGS84, which ...
2
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2answers
50 views

Is it Possible to Resize the Pixels

I classified this image in ArcGIS 10.3, but my Professor said the pixels are big and I should make it smaller. This is my problem: is there any tool that can use to make the picture grains finer. Or ...
2
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1answer
53 views

Why do “stripes” appear on raster?

I am reprojecting a SRTM 3 arc-second raster file from WGS84 geographic coordinate system, to projected coordinate system which is using Azimuthal Equidistant projection: gdalwarp -s_srs EPSG:4326 -...
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1answer
58 views

Resampling a raster file with GDAL C#

Is it possible to resample the raster by using GDAL C# binaries, in a way that every other cell in a row and column is removed? Basically a replication of this GDAL command: gdal_translate -outsize ...
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0answers
31 views

Resampling netcdf file?

What is the best way to change the cell size of a netcdf file, keeping it as netcdf? I have looked into ArcGIS and GDAL and have not found anything yet. I prefer to use python if a solution is ...
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35 views

Is it valid to resample a raster from 1m to 3 feet?

I know that in general it is not a good idea to up-sample. I am curious if it would still be be a "bad idea" with a minor change like this from 1m resolution to 3 feet? Going to 3 feet would not ...
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0answers
37 views

gdalwarp won't run with “cubic” resampling method

I am having an issue with running the gdalwarp command from command prompt. Basically I have a raster WGS84 file, which I would like to reproject to spatial reference which is using the Azimuthal ...
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0answers
31 views

Flipped (Y-axis) Raster from point cloud

I have been working on a project where I need to create rasters from irregularly spaced point clouds. I am resampling my point clouds to a regular 0.25 cm grid using a nearest neighbor method ...
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0answers
36 views

Possible to resample tifs in numpy array? [closed]

I need to resample a large number of tif files. Is it possible to put the list of rasters in a numpy array and resample the array? I'm thinking this would be faster than looping through the list, but ...
1
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0answers
13 views

Change pixel size of 30m for 23.5m in QGIS [duplicate]

I need to change pixel size in raster file file with Pixel Size = (28.086057277202915,-28.086057277202915) using Qgis for Pixel Size = (23.951601289061028,-23.952379920305706) what kind of function I ...
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0answers
88 views

Resampling raster in ArcGIS

I have a raster that I need to resample and its cell size is 250m x 250m.I need the cell size of the new raster to have width of (9km) and height (9km). ArcGIS keeps crashing when I am doing this ...
4
votes
1answer
120 views

convert lat/lng to pixel and vice versa

This had been asked previously on Stack Overflow. I've tried different methods/formulas but results are not correct. 40.764296,-73.97302 should result into 930,3590 pixel on map image. I've Manhattan ...
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0answers
87 views

R Efficient Way to Resample, Crop, and Mask a Raster Image

Does anyone know an efficient way to resample an image? I am currently trying to crop a large image and clip 2 regions from a shape file. From this clipped image, I would like to increase the pixel ...
3
votes
2answers
111 views

Changing pixel size in 'asc' file using Qgis?

I have soil data and BioClim data from Australia soil data: rows 2200 columns 1400 pixel size 0.0025, -0.0025 255 BioClim data: rows 660 columsn 420 pixel size 0.00833333, -0.00833333 I am ...
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1answer
78 views

How does Resampling raster work at corner cells?

This may seem quite a simple question for which I couldn't find a satisfactory answer. I have been trying to understand how resampling of raster work with ArcGIS 10.3, in both cases of refining and ...
2
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1answer
64 views

Resampling gives higher MEAN when using zonal statistics

I am using ArcGIS 10.1 for Desktop. I have a value raster and a polygon feature in GCS coordinates. My raster resolution is 0.5 decimal degrees which is much larger than the size of my polygons. My ...
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1answer
123 views

Best resampling method for DEM?

I have a task to slice 10m elevation model into the 0.1 x 0.1 degree tiles. I also have to change the projection method used in the TIFF - the WGS84 (Mercator) is a must. I have implemented the ...
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1answer
100 views

Resample not changing the cell size

I am trying to use the Resample tool in Spatial Analyst to go from a 1kmx1km grid to a 500mx500m grid for increased resolution of my land use data. My cell size is 0.008, and I want a 0.004 cell size....
2
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1answer
49 views

Can I use areal mean pixel value in raster for input to Extract Values to Point tool

I have a dataset consisting of a point vector file (plant leaf area) overlaid and georeferenced to a raster file (soil moisture) that I want to use as inputs to the Extract Values To Point Tool in ...
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2answers
113 views

Resampling DEM using gdal in python?

Using gdal I want to resample (in this case, oversample) a DEM. The only thing that should change is the pixel spacing, so I want to interpolate in between the values that I currently have. For this I ...
1
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1answer
108 views

Resampling 30 m NDVI to 5 m in ArcGIS

Is there any easy way to resample 30 meter NDVI from Landsat 8 images to 5 Metres? I use raster to point and the interpolation of point to raster using Krigin method. I know that it may not be a ...
1
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0answers
63 views

Why does gdalwarp's cubicspline method expand into nodata areas?

The image below shows part of a peninsula on the Australian island of Tasmania. The black pixels are 9" climate data with GDA94 (EPSG:4283) SRS, projected by QGIS on the fly to Australian Albers (EPSG:...
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1answer
92 views

How does majority algorithm works in ArcGIS

I'm trying to understand how does the majority resampling works in ArcGIS, they write that "The MAJORITY option, which performs a majority algorithm, determines the new value of the cell based on the ...
0
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0answers
55 views

Resampling and snapping DEM to match a second raster

I have a DEM that is derived from a 50K map (provided by Geobase Canada), the resolution indicates it is 23.19156058m per cell (raster name DEM_50K). I need to resample this DEM to a 100m cell size (...
0
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0answers
77 views

Project Raster: Resampling

Is this (optional) resampling technique in the Project Raster tool only being used if changing the grid resolution (cell size)? Or should I always select bilinear (or cubic) for continuous data even ...
1
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1answer
158 views

What resampling method is used in gdal_merge?

I am using the gdal_merge python script to merge rasters that have slightly different, though similar, input resolutions. The documentation advertises that it can handle different resolutions, and in ...
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0answers
146 views

When subtracting two raster with different cell sizes using raster math, what value is used for smaller cells?

After reading the answer to a similar question (What will happen if we subtract two raster with different cell size using Raster Calculator?), I am still left with a question. When the raster with ...
2
votes
1answer
204 views

ArcGIS resampling rasters by maximum pixel value?

I need to resample a binary image of linear features like roads, rivers to a coarser resolution, conceptually combining multiple pixels into a single one. 1 indicates presence of the linear feature, ...
1
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1answer
99 views

Looping inside r.mapcalc in GRASS GIS

I have a Land Cover classification map that I created from 2m resolution multispectral imagery and I am trying to downsample the results to a 20m resolution class map. The climate in question is ...
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0answers
188 views

How to resample a raster by defined value?

I have got an Euclidean Distance Raster and I need to resample it. I work for a security company and I need a map with the camera resolution (pix/m) in every point of the map covered by a camera. What ...
0
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2answers
176 views

Re-sample raster to acre grid using ArcGIS Desktop or R?

I have a 1m classified landcover raster layer that consists of values 1-4 representing various land covers. I need to resample this layer to an acre grid. Each acre in the resultant grid should ...
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0answers
50 views

What is the kernel width of the gdalwarp resampling methods?

gdalwarp provides 7 resampling methods. How many neighborhood pixels do contribute to upsampling respectively downsampling? I will try to guess. Please correct, if values are wrong: Upsampling: ...
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0answers
201 views

Spatial Interpolation/Resampling of Point Surface Data - Axes @ Different Resolutions

I have a simple set of data points in x,y,z format. This was data collected from a ground penetrating radar over a physical distance of: 45m x 25m With a resulting grid of: 90 x 100 (9000 points) ...
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1answer
136 views

Reduce number of points, keeping most recent data within a given distance

I have a HUGE dataset of points that were collected along a route. The data may change daily, and the most recent data is the most important. What I would like to do is take only 1 point from a given ...
3
votes
1answer
339 views

Converting worldclim data to 30m resolution

I know that resampling from coarse resolution to fine resolution is bad. Effectively you are making up data. However, if the study area is small are there any other options? Worldclim comes at around ...
2
votes
1answer
438 views

Choosing Point to Raster vs Feature to Raster in ArcGIS for Desktop?

I am converting point vector data to a raster dataset using nearest neighbor. I am using arcgis 10.2. The first step is to use the conversion toolbox, but there are two possible options: Point to ...
1
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1answer
106 views

Saga:processing resample extent in python editor QGIS

I would like to resample many geotiff layers to another geotiff layer's extent and pixel size. For this I would like to use the QGIS python console (editor). When I run my script it raises the ...
0
votes
1answer
96 views

Work order: project then resample, or resample then project

I'm working with 10m DEMs in northern New York, along the Canadian border (in ArcGIS 10.2). To complete a regional elevation map (and eventually slope, flow, etc.), I need to also include a portion of ...
1
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0answers
126 views

Reprojecting a population raster from LAEA to lonlat

I have a population density raster from the EEA which is based on the CORINE land cover 2000 data. http://www.eea.europa.eu/data-and-maps/data/population-density-disaggregated-with-corine-land-cover-...
1
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2answers
319 views

Divide two rasters with different cell sizes using ArcGIS for Desktop?

I've got two rasters of the exact same location (So every pixel in one raster is equivalent to the pixel in the other raster). Raster A has a resolution of 6m per pixel. Raster B has a resolution of ...
4
votes
2answers
268 views

How can I smooth or resample a DEM to find steep roads?

I am trying to find sections of road with steep gradients. My process is: pull a linestring from Openstreetmap data resample it to create a point every 10 metres look up the height data for each ...
0
votes
2answers
1k views

Convert Raster Resolution in arcGIS

I have to analyze 8 raster layers, 5 of them are 0.5 degree resolution and the other three are 0.05 degree resolution. Firstly, should I resample the 5 to finer resolution (0.05 degree) and if ...
6
votes
1answer
595 views

What resampling technique should be used to reproject an altitude raster?

Does anyone know whether I should choose: nearest, bilinear, cubic or majority when projecting the WorldClim altitude raster layer?