Questions tagged [nlcd]

The National Land Cover Dataset, a nationwide raster layer depicting land cover in the United States.

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Generating points OR polygons whose surrounding acreage is comprised of specific percentages of land classes using the National Land Cover Database

I am working with the National Land Cover Database, and I am trying to generate points that have specified percentages of certain land classes within a specified distance. For example, I would like to ...
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37 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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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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333 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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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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Seeking remotely sensed data for measuring urban gardens?

One of the students in my lab is currently seeking methods for measuring the very small size of urban green spaces in people's gardens. Is there a data set out there that may be appropriate for this?...
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229 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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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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67 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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117 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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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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118 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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258 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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262 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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454 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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246 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 ...