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Questions tagged [resolution]

Resolution is a measure of the smallest unit or sample in data that can be distinguished from any other, and/or the number of samples for a given unit.

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Rasterio CLI warping multiple rasters like another raster in all minus one feature

I'm writing a bash script to warp all the rasters in a specific directory to match another raster. I'd like to warp all these rasters iteratively in to match the other raster in all was except shape ...
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Changing the spatial resolution - stacked raster in R

Want to change higher spatial resolution UAV dataset stacked in R. Used raster package to stack the individual band. Want to change the spatial resolution to 1 m. stacked_UAV <- stack(stack_list)...
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42 views

Print Openlayers WMS map with fixed scaling

I need to print a map with a fixed scale (1:500 and 1:1000) on A4. The online map is done with Openlayers, the print request is sent to QGIS Server using WMS getPrint function. I mange to get an ...
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Is it possible to set maxResolution for a layer after layer creation in OpenLayers 2?

var OsmLayer = new OpenLayers.Layer.OSM({ isBaseLayer: true }); _map.addLayer(OsmLayer); I tried, _map.layers[0].maxResolution = *some value*; & _map.baseLayer.maxResolution = *some value*;...
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1answer
33 views

Raster from a set of Points keeping the resolution

I have a database with some points covering the earth surface and I want to build a raster (GeoTIFF using gdal_rasterize) which mantains the same spatial resolution of the input points (so without ...
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Availability of super-resolution reconstruction (SRR) techniques in GIS software

I'm doing a little research of my own regarding super-resolution reconstruction in general and in the context of GIS software. I'm well aware of pansharpening techniques which became a standard in ...
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55 views

High resolution geopdfs in Qgis 3

In Qgis 2 I used to get high resolution geopdfs form the Georefexport plugin. In Qgis 3 i can get geopdfs by using the print composer/layout. However, I can not find a way to get high resolution ...
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1answer
16 views

Disaggregating list of rasters in R?

I would like to disaggregate a list of raster files in R. I write the following code but receive an error. # Import libraries require(raster) # Setup filelist and naming convention based off infiles ...
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1answer
37 views

cannot upscale raster with rasterio

I am trying to upscale a raster using rasterio but I don't now why my process gets killed. it can print "i am arrived here" but on the reproject() i have as terminal output killed This is the code ...
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76 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 ...
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Which is the View.getResolution() units? [duplicate]

In OpenLayers v5, if I have a view defined like this: var view = new View({ center: [952014.59, 5571269.68], zoom: 8 }); , trying to get its resolution doing view.getResolution() outputs 611....
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1answer
28 views

Appropriate resolution for regression analysis

I'm using ArcMap 10.3. I'm a student working on a research problem where I'm taking Landsat imagery (at 30-meters resolution) and regressing it against other datasets captured at different scales (up ...
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1answer
30 views

Kriging with variable spatial precision?

I have a data-set comprised of hydraulic conductivity estimates measured at groundwater monitoring wells, as seen here: Exact GPS coordinates are available for some wells, while for others I only ...
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21 views

Map in print composer plots in low resolution

We have problems with settings with the output resolution of digitized topographic maps. When zooming in the map in lower scale, is not showing the detailed view but it just zooms the map in low ...
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Setting both spatial extent and resolution when using gdalwarp?

I would like to overlay two tiff image that orginally have different projections. One is MODIS sinusoidal and the other one is WGS84. I use gdalwarp to re-project the latter into the same projection ...
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1answer
42 views

Optimum raster tile size

I am wondering if there is an optimum raster tile size when using -t in raster2pgsql. I am setting -t auto and it creates thousands of tiles and takes hours to load. I am working with very large ...
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97 views

How to get extent from current resolution in OpenLayers 3 for printing

I need to print a map with a fixed scale of 1:500 horizontally on a A4 paper (297x210mm). The map is done with Openlayers, the print request is sent to QGIS server using WMS getPrint function. Till ...
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1answer
52 views

Origin of LandViewer DEMs?

does anyone know how DEMs that can be downloaded from LandViewer are generated? They have higher resolution than SRTM and other free sources.
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59 views

How can centre of 1 Km pixel be 100m apart?

I am working with MODIS C6 derived fire location product distributed by LANCE FIRMS. The product is a point shapefile corresponding to the centre of each 1kmx1km MODIS pixel where fire was detected. ...
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34 views

Increase DEM resolution in QGIS2threejs

I use QGIS and QGIS2threejs-plugin for quite a while. In context of a current project I need to increase the resolution of the DEM over the whole project area - the right end of the "resampling simple ...
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1answer
42 views

Seeking accurate WMS server for Kenya?

I am looking for an accurate Map for visualizing positional data collected in Kenya. Right now I am using EXOMAPS (https://tiles.maps.eox.at/wms), in particular, a Sentinel2 cloudless view, but I am ...
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46 views

Getting hazed figure when exporting a high resolution image in QGIS

I have a raster map made in QGIS. I am trying to export that map in .tiff format in high resolution (Somewhere around I can get a file of 300 MB). So I am exporting the image with a resolution of 960 ...
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2answers
252 views

Change the resolution and size of a raster with GDAL in Python

I am quite new to GDAL and Python but want to use it to create groundwater models in FloPy. I have a raster with rivers (roughly drawn) and a DEM raster. The resolution of the river-raster is higher ...
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1answer
58 views

GeoServer - Conversion formula between scale and resolution

I am trying to figure out what is the conversion formula between scale and resolution used by GeoServer, specifically when creating a new gridset for Tile Caching. One would expect that the conversion ...
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From DEM resolution/precision what limit to contour lines altimetric range?

I got a 1m resolution DEM: what is the altimetric range limit of contour lines I can create from it? Not only the resolution needs to be taken into account but precision as well. For now, I did not ...
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1answer
189 views

Are there high resolution images available for download on earthexplorer?

The problem with earth explorer GeoTiff files is, if you zoom in enough, the resolution is very fuzzy. If you want to look at your backyard, for example, that is impossible. If you use the earth ...
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1answer
38 views

MapProxy WMS Print Scale Problem

The application that I work with consumes WMS services created in Geoserver via MapProxy. I used ysld to style my layers. As long as I want just display my layers in the application, the scales that I ...
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1answer
46 views

ArcMap blurry after update from 10.4 to 10.5

I had to recently update ArcGIS from 10.4 to 10.5 because of a new license. In the new version everything looks a little "blurry". All other programs (Word, Excel etc) look fine. Even in ArcMap the ...
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2answers
102 views

What does 4.5 mm resolution mean?

this is a rather simple and trivial question, but before I contact my supervisor I want to get sure. I have a .tif image that says the resolution is 4.5 x 4.5 mm. The output of gdalinfo is: Pixel Size ...
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1answer
58 views

Changing DEM resolution when creating a slope raster? [duplicate]

I want to create a slope map using a LiDAR DEM. I think that I should use the slope tool; but I need a slope map with a 2m resolution and I'm not sure how to do that. How can I have a slope map with ...
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1answer
163 views

changing projection in R without changing resolution [closed]

I have the following code to re-project my raster data. My problem is that when I change the projection, it seems that the resolution as well as pixel values change. I want to maintain the original ...
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1answer
50 views

Changing cell size output for Proximity (Raster Distance) tool in QGIS

I am trying to create a raster layer with distance to shore that has a resolution of 1km. I've created a raster distance layer using the Raster > Analysis > Proximity (Raster Distance) tool in QGIS ...
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2answers
97 views

ArcGIS export map options

I have a problem with the "export map options" of ArcMap 10.2 There are only two parameters in the option window that are: general and format. I set high dpi at 300 but the map exported has not a good ...
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86 views

What happens to the pixel spacing and resolution after a sub-sampling?

After I sub-sampled a Sentinel image (that has a resolution of 93 rg x 87 az, and a pixel spacing of 40 rg x 40 az) with the SNAP toolbox or MatLab, what happens to both of those features if I use for ...
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2answers
253 views

How to do better quality of texture on DEM in qgis2threejs?

I use as texture for DEM image with original resolution 4000x4000px. But when qgis2threejs creating 3D model in browser - texture looks like image with low quality. In plugin menu there is line "...
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1answer
45 views

Adjusting resolution between two raster

I have two rasters with very slightly different resolution and the same number of cells. I need to adjust the resolution from one of the rasters (Raster 1) to match the other (Raster 2). Is there a ...
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0answers
95 views

Cell size (10m) in Raster properties differs from measured cell size (20m) in multiband (Sentinel) raster?

I've always thought that if raster resolution is 10m, the cell size in the raster is 10m, and therefore the length of pixel is 10m. Now I have started to work with Sentinel 2 optical imagery. ...
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61 views

High resolution (house-level) tiled map imagery SAAS

I'm aiming at showing (on a web map) my visitors their house property bounds with some overlay. Thus, I'd need to find access to very high zoomed imagery, and I'd like to use Open Source and nice-...
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How Many Cells of Each Value Inside A Sampling Grid

I have a raster land cover data set, broken into 7 landcover types at 15x15m resolution, and my goal is to figure out how many of cells of each type are inside my sampling grid. I set up a sampling ...
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36 views

Fly-through GRASS GIS resolution

I want to create a fly-through in GRASS GIS 3D. The problem: throughout the "flight" the rendering is at low visual resolution, while it is set a high resolution. Is there a way to render a flight ...
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0answers
122 views

Maintaining same extents in R?

How can I maintain perfectly equivalent raster and SpatialPointsDataFrame extents when in R? Each time I combine rasters, or raster and point data, the extents are very slightly different (like ...
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1answer
81 views

error: wrong resolution for raster calculator, how to work with this?

I have two raster files (lets call them raster A and B) and I would like to multiply them with the raster calculator. I keep getting an error message when working with the raster calculator. I thought ...
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1answer
41 views

Increase the dimensions of each cell in a raster without any kind of resampling?

I have a DEM interpolated from a TLS point cloud at 1 mm cell resolution. This resolution is too fine for use in a 2D surface inundation model with the required timestep, without the model taking far ...
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1answer
201 views

Exporting Layout View as GeoTIFF controlling resolution and size with Python?

I have two data frames ("Final" and "OverviewMap1") on one Layout View and I can't export them as a whole in one GeoTIFF. What is wrong with the following script: import arcpy mxd = arcpy.mapping....
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1answer
262 views

Error: Grid layer was not correctly generated

Faced this error already several times when I was playing with processing algorithms: I used hi-res DSM/DEMs out of UAV surveys. Resolution between 2,5 - 5 cm GSD. Output format: .tif Any ideas ...
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4answers
699 views

DSM resolution reduction in QGIS

Does QGIS - through one of its rich algorithms library - allow for reduction of raster DSM/DEM resolution? I want to speed up the analyses and reduce effect of detailed raster on results readability. ...
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1answer
142 views

Stamping two rasters in QGIS?

I have two LiDAR datasets; one of 1m resolution and another of 2m resolution. I want to stamp 1m LiDAR data on 2m LiDAR. Similar tool is available in Vertical Mapper in MapInfo called as Splicer ...
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leaflet 2 layers with different resolutions

EDIT : Wrong projection pastet into this post. Im trying to add 2 layers to the same leaflet map that have different resolutions. They got the same Projection and bounds but different resolution. I ...
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1answer
5k views

Using resample vs. aggregate & extend in R to have rasters of matching resolution and extent

I have two rasters of different resolution and extent: > res(Elevation) [1] 0.002083333 0.002083333 > res(Ann_precip) [1] 0.008333333 0.008333333 > extent(Elevation) class : Extent ...
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1answer
58 views

Radiometric Resolution of Landsat Sensors

Landsat data is in 8-bit (0-255) format. Would the difference between the sets of visible-NIR bands for Landsat 4,5, and 7 vary significantly?