Questions tagged [nlcd]
The National Land Cover Dataset, a nationwide raster layer depicting land cover in the United States.
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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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1answer
44 views
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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1answer
33 views
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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14 views
NLCD Detection Limit of Land Classification
I am working on a project with NLCD 2016 data that involves calculating the percentage of each land cover class around sites. I have this working, but need to impute zeros around each site for the ...
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21 views
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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0answers
92 views
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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1answer
56 views
Effiently incorporatinig metadata (.xml) into rastered landcover data (.tiff/.toff.ovr/.tiff.vat.dbf)
So 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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1answer
102 views
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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263 views
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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1answer
640 views
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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1answer
415 views
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 <- ...
4
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1answer
408 views
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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1answer
272 views
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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1answer
1k views
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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1answer
2k views
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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1answer
874 views
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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1answer
105 views
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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0answers
128 views
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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1answer
496 views
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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1answer
2k views
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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1answer
75 views
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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1answer
142 views
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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1answer
117 views
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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2answers
4k views
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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1answer
186 views
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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2answers
399 views
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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1answer
375 views
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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1answer
575 views
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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1answer
272 views
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 ...
