Questions tagged [nlcd]
The National Land Cover Dataset, a nationwide raster layer depicting land cover in the United States.
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Find the distribution of nlcd categories within polygons
I am new to QGIS. I am trying to find out the distribution of NLCD bins within the buffered areas. The buffered areas is a vector layer, while the other is the NLCD raster (downloaded from MLRC). ...
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How can I make a raster layer where each pixel is a value representing the minimum distance between that pixel and a value from another layer? [closed]
For instance, say I have a raster map of open bodies of water where each point is 0 if it is not water or 1 if it is water.
How can I make a new layer where every point is the distance between that ...
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Clipping large National datasets to large river basins, or merging many smaller geodatabases/tiles in ArcGIS Pro
My question is more about finding the most efficient way to process large national datasets. I am trying to summarize land-use change, agriculture crop area,soils,and hydrological and streamflow ...
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NLCD disappears after I reclassified it?
I pulled NLCD data into my project, reclassified, everything was fine.
New reclassified layer worked great, saved project, closed. Re-opened this morning, reclassified NLCD is in TOC, but is not ...
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Seeking to determine land use based on lat, long using GeoPandas
For a very large number (>500,000) of points we want to determine the NLCD surface descriptor for the point's latitude and longitude.
I've used the following code to access the dataset:
import ...
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How to find distance to nearest habitat and size of nearest habitat patch for a raster in R?
I need to create a raster in R that has three values for each cell. The first value is the habitat type code based on NLCD data. The second value is the distance from each cell to the nearest "...
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Convert NLCD 2016 Raster to Vector
My goal is to create a .shp file in CRS EPSG 4326 - WGS 84 of land cover data for several counties in California. My idea is to use the NLCD 2016 dataset in QGIS to convert it into the desired ...
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NLCD 2016 Data in QGIS
I am struggling to convert the NLCD 2016 data to a shapefile in a CRS of WGS 84. I have three problems (that I think are simple) that I would love some help with:
(1) It seems other's have the option ...
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County area calculated from NLCD rasters is too large (with R)
I'm trying to calculate landcover repartition for each US county.
I have obtained NLCD for the Apache county using the FedData package (devtools version) and I'm using county shapefiles from the ...
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NLCD WMS Server Returns Color Index Instead of Classification Code [duplicate]
When I use the WMS service to download a region of the NLCD 2016 dataset the service returns a geotif with color index value and not classification code. The image successfully loads in ArcMap or ...
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r.to.vect is not responding in QGIS GRASS
NLCD data entered for half of Illinois, all of Michigan and Wisconsin, plus additional along borders.
Used r.neighbors to simplify, then r.to.vect with "smooth corners" feature selected.
Got ...
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Effiently incorporatinig metadata (.xml) into rastered landcover data (.tiff/.toff.ovr/.tiff.vat.dbf)
I'm using this VGIN data to understand land cover surrounding points in Virginia in QGIS. The VGIN data came with ~100 tiles (and for each there is a .tif, .tif.ovr, and .tif.vat.dbf file) and two ....
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NLCD Data Processing in QGIS 3+
Firstly, sorry for having to post this question, I feel like I've been going in circles trying to make sense of similar questions. I'm quite new to QGIS so please do re-direct this if needed.
Why I ...
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Which year change does NLCD Land Cover Change Index show?
After downloading the National Land Cover Dataset (NLCD) Land Cover Change Index from the Multi-Resolution Land Characteristics Consortium (MRLCC) website, it only contains one raster file. However, ...
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National Land Cover Dataset 2016 Land Cover Change Index Values Meaning
After downloading and clipping the NLCD 2016 Land Cover Change Index raster and viewing it in ArcMap, the table of contents shows a legend with values 0-12. They are depicted in the following picture: ...
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Clipping NLCD Land Cover Data in ArcMap
I am using ArcMap 10.7.
I am somewhat new to geospatial data analysis and have an analysis question that I am hoping the community here might be able to assist with. I am working with a large raster ...
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Getting Land Use data from National Land Cover dataset
I'm downloading data from the National Land Cover database using the get_nlcd tool from the FedData package. Here is an example for documentation for this package
library(FedData)
vepPolygon <- ...
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Converting NLCD raster to vector using QGIS
This is a followup question to: Determining percent land coverage around points of interest using NLCD and QGIS
I am looking to determine the percent of various landcover types (wetlands, forest, etc.)...
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Determining percent land coverage around points of interest using NLCD and QGIS
A former grad student was working on a project using ArcGIS to calculate land coverage (specifically water) around the breeding location of a threatened bird species. His zones went out 3, 10, 17, and ...
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Google Earth Engine really slow in loading maps
I am using the code below to run random forest classification, clip and mask the layer, and then export the map to Google Drive. I expected the export process to be slow. Nevertheless, why are the ...
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Exporting feature collection in Google Earth Engine?
I am working out the area (in hectares) of a land cover class in the counties of California using google earth engine. So far, I have created a featurecollection that works, but when I try to use the ...
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Projecting NLCD data as WGS84 using QGIS?
I am using QGIS 3.03 Girona and trying to process the CONUS 2016 NLCD (Continental US 2016 National Land Cover Database) 30x30 raster data provided by the MRLC viewer.
I downloaded an area with the ...
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How to display previous epochs in of NLCD on GEE
GEE has the full National Land Cover Database and this has enabled a number of projects for me but I'm stumbling on a simple problem.
When I display the NLCD I can see that each point contains land ...
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Calculating Canopy Cover percentage in buffer using ArcMap?
I am trying to calculate percent canopy cover within a buffer for each site I have. Here are the steps I took.
I used the tabulate area function with the canopy cover layer to get the area for each ...
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National Land Cover Dataset (USA) Data Extraction
I have downloaded the NLCD 2011. It has different formats of files (i.e. .rrd, .ige). I tried to open the (.rrd) file using ArcGIS 10.5.1 but it couldn't open it.
Can you suggest me how can I view ...
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How to read a raster value table (VAT) in QGIS? [duplicate]
By default, QGIS does not seem to recognize "Value Tables" (VAT) the way ArcGIS does. So far I cannot find a way to represent the pixel values discretely, or apply a "legend" to the layer. Is there ...
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What is no change class in NLCD 2011?
I have to use the NLCD 2011 dataset and I am trying to understand the "no change" class. This class is not defined in any of the legend descriptions (Anderson classification).
What is the no change ...
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Using NLCD to quantify rate of urban sprawl in a watershed
I have downloaded five datasets and would like to quantify the rate of urban sprawl in a watershed from 2001 to 2011 using NLCD. Here is the data I have: (1) NLCD 2001 to 2011 Land Cover from to ...
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Is there a version of the NLCD that doesn't have developed areas?
I'm currently working on a personal project that requires that I remove the developed areas from the NLCD. I'm currently using the 2011 data, and I have some solutions in my head that might work, but ...
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Displaying NLCD landcover data in QGIS with landcover class type?
I am trying to display land cover layer (.tif) into QGIS. But some reason the layer appears in grayscale when I load in QGIS (Figure 1). I am expecting to see the somewhat similar display as in ArcMap ...
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Creating one layer through use of SQL queries for land use categories
I have a map with about 63 grids and trying to determine the land cover user category of the greatest area size in each grid. The land cover categories have been converted to polygons and I already ...
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QGIS Merge rasters without projection edges
I have been trying with no luck to merge forest canopy rasters available through the NLCD (e.g. Grids 102 and 105) using QGIS in Mac (as well as R, and SAGA in Windows).
The GeoTIFF grids import and ...
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Reclassifying NLCD data, specifically open water
I've been working with NLCD data at a county level. My goal is to reclassify the pixels that fall under the open water classification. I've got a hydrography shapefile for the same geographic location ...
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How do I get the default NLCD symbology back after clipping/projecting?
NLCD landcover rasters downloaded from MRLC have default legends and symbology as shown here: http://www.mrlc.gov/nlcd11_leg.php
However, when I extract the raster through a mask, or reproject the ...
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Estimating tree cover (or other vegetative cover) over impervious cover using NLCD data
Has anyone attempted to estimate tree cover or general vegetative cover over impervious cover using the NLCD data sets? The provided layers (land classification, tree cover, impervious cover) could ...
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