Questions tagged [land-cover]

The observed biophysical cover of the earth's surface. Data are essential elements in a wide array of government and private sector activities, including inventory, management, monitoring, and modeling.

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Print pixel values from Copernicus landcover

I would like to export Landcover values for pixels defined in my csv table (regionCol). Even though this code works fine with other Images, it does not export the mean values (which I need) from the ...
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Trying to Calculate Built-up Class area using ESA LULC

I am trying to calculate the Built Up class area but not getting the correct result. I am using ESA 10 Meter LULC. ''' var area = ee.FeatureCollection("users/Muhammad_Waqas/District_Boundary"...
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Calculate how many points are located within certain land cover classes - QGIS [duplicate]

I am working on a project for my university and this is my first solo project. I have two layers: The first layer is a land cover classification with 6 classes. The second layer is a set of points ...
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Calculate percentage of points within land cover classes QGIS

I am working on a project for my university and this is my first solo project. I have a land cover classification with 6 classes. I also have a set of points that are recorded sightings of a mammal we ...
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Creating ROI polygons for Landcover Classification in QGIS

I am trying to create a Landcover Classification of an area in South Africa, using Sentinel-2 imagery, in QGIS. To elaborate: after downloading the relevant images from the Copernicus site, I then ...
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Google Earth Engine Mann Kendall Significant Trends

I currently have my Mann Kendall significance and trend code but I want to just show the trends that are significant. Here is my code: var mod13 = Ls; var coll = mod13.select('NDVI') .filter(ee....
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Goal: find LC change using Tabulate Area tool

I am working with 2 years of LC data, 2006 and 2016, with an end goal of performing a LC change analysis. So far I have used the Tabulate Area, spatial analyst tool, which has given me an output table....
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Finding land cover types in burned area using QGIS

I would like to know how to extract the land cover type in my burned area. I feel like it's a very simple problem, but I wasn't able to find anything on the net. I am using QSIS for this. So far, I ...
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To know the forest cover, forest loss and forest gain in Bangladesh

I wish to know the forest cover, forest loss, and forest gain in Bangladesh from 2000 to 2020. For this, I have used the 'UMD/hansen/global_forest_change_2021_v1_9' collection from Hansen's global ...
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1 answer
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GEE error Dictionary.set: Parameter 'value' is required

I'm attempting to calculate the proportion of landcover classes for each county in Oregon in GEE and export values as a CSV, but I get the following error: Error: Error in map(ID=00000000000000000000):...
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How to get all unique raster values of intersecting vector in Python?

I have a tif-file containing categorical numerical land cover values and a gdf-file containing roads as linestrings. I'd like to create a new column to the road gdf that contains all unique ...
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Pixel-wise max class count for ImageCollection in GEE

I am working with Dynamic World dataset. The label band gives me the pixelwise landcover class values. For any specific year, ImageCollection.mode() gives me the pixelwise most occurring landcover ...
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Classifier training failed: 'Only one class.'

I am new to Google Earth Engine and am trying to classify landcover. I keep getting the error of "Classifier training failed: 'Only one class.'." However, I have multiple classes. var ...
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Fixing colour variation problem in tile after mosaic using ArcMap

I am trying to do LULC (land use land cover classification) for a large chunk of area which requires joining multiple tiles. But after mosaic to new raster, few tiles show very different colour, ...
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ArcGIS is not showing all the colors of TIFF image exported from Google Earth Engine

I am doing supervised classification in Google Earth Engine then export the output in .tiff format image. For prediction works, I need to import those .tif images in the ArcGIS. But ArcGIS / ArcMap is ...
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Change missing areas value(0) to other in Google Dynamic World Landcover Yearly Mode Mosaic to not mix with water class (also 0)

When I create a yearly mode mosaic using Google Dynamic World Landcover Data, the areas with missing landcover values especially in high Himalayan regions(perhaps due to the 35% cloud threshold) are ...
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Land cover img. file - Conversion to TIFF file

I have a land cover data with 4 classes in .img format. Since I cannot upload it to Google Earth Engine assets because of its format, I needed to convert it to TIFF. format. I tried 'export data' in ...
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How can I group Land Cover Classification into urban vs rural areas and summarize Land Surface Temperature for each class in python? [closed]

I have NLCD land cover classifications from an .img file as follow: I would like to somehow reclassify these into Urban or Rural by taking all developed as urban and the rest, minus water as rural. ...
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Chi-square between rasters

I have two rasters (both with 10 m * 10 m resolution, for an area of approx. 1 000 km2) with the following variables. Both are categorical. A) Habitat type with 9 different classes. B) Soil moisture ...
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QGIS Aggregate 1x1km grid into 10x10km for Brazilian Land-Use Data

I'm working with an externally-provided dataset, which is a 1x1km grid of the Brazilian Amazon. Each grid cell contains information on the percentage covered by various land-covers e.g. 30% Pasture, ...
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Selecting a specific land cover type based on colors in GEE

I want to select a specific land cover type in a land cover map obtained from the GEE dataset. Because I know the corresponding hex colour code, I tried the colour code as a condition to filter the ...
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Counting how many unique values each pixel contains across rasters/layers

I am using QGIS. I have 20 large rasters showing land cover over 20 years (MCD12Q1). Each pixel contains a value between 1 and 17 that corresponds to a land cover class. I am trying to create a new ...
3 votes
1 answer
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Get lan&lon and values from GeoTIFF using Python

I have GeoTIFF images from https://esa-worldcover.org/en My goal is to get a list of latitude / longitude / value from that image. The value is a numeric attribute which represents a class as ...
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Extract class from lat&lon GeoTIFF using rasterio [duplicate]

I would like to extract the coverland class from all available coordinates from a GeoTIFF downloaded from ESA website. I can get a JSON structure with the polygon coordinates. This is the code: import ...
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Accuracy assessment of land class covers in ArcGIS

I want to compare the accuracy of citizen scientists in mapping a satellite image by using a raster labelled by an expert as my ground truth. How can I do this in ArcGIS Pro? What I've tried so far: I'...
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LULC-2021: Layer error: User memory limit exceeded

I am trying to create a LULC map for Maharashtra State in India. I collected training polygons for 7 classes: Agriculture, Water, Builtup, Fallow Land, Barren Land, Wetlands, Other Vegetation. I am ...
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Land cover change detection using raster calculator in QGIS

I am trying to find the difference between land cover data from two years. I have used the same classification for both the raster files. For eg: 1-Agriculture 2-Forest 3-Urban 4-Water bodies 5-Barren ...
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Combining grouped reducers in Earth Engine

In Earth Engine, one can easily apply a same reducer to multiple band in an image. Unfortunately, it seems that this nice feature breaks if one uses a grouped-reducer? repeat() will work if one seeks ...
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How to distinguish never deforested from never forested using Hansen forest data

The Hansen Global Forest Change dataset has a lossyear band, for which 0 values mean no loss. However, no loss can either mean: The pixel was forest in the beginning of the sample (2000) and still is ...
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Using ArcMap to calculate percent for each pixel

I am using ArcMap. I have a land use file in TIFF format with 10 meter resolution. I would like to know in 30*30 square meter of my file how can I calculate which percent of each pixel of my file is ...
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How to add coastline over a plot of a RasterLayer in R?

I'm working with raster images. I need to add the european coastline over this plot(fdiff_north) in order to get a more usable image`: I got this plot by using these codes: ext <- c(4e+06, 5200000,...
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How to subtract two Rasters with discrete values in R?

I'm working with these two rasters: clc_forest18 class : RasterLayer dimensions : 16000, 12000, 1.92e+08 (nrow, ncol, ncell) resolution : 100, 100 (x, y) extent : 4e+06, 5200000, 1200000, ...
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How to get the number of pixel with a given value from a RasterLayer in R?

I'm working with Corine Land cover data. I want to assess the number of pixels with any forest value (311, 312, 313, 321, 322, 323, 324) of two reference years. That's wat I did: clc00 <- raster(&...
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Using higher resolution (10m) labelled land cover image on lower resolution (30m) raster

I want to train a simple CNN model to pixel-wise classify a satellite image into separate land covers. I have the ESRI 2020 land cover data which has a resolution of 10m x 10m for training. I want to ...
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Classify pixels using deep learning is giving wrong result for Landsat-7 data in ArcGIS

I am trying to classify two LULC maps from two data. One is for 2020 (Landsat 8), and another is for 2000 (Landsat 7). The pixel depth is 64-bit and both of the data were downloaded from Google Earth ...
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1 answer
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problem with list.files() in R

here you have my data https://www.eea.europa.eu/data-and-maps/data/corine-land-cover-accounting-layers. I downloaded "CLC2000 Accounting Layer " file and "CLC2018 Accounting Layer" ...
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How to extract forest cover type from Corine Land Cover raster in R

I'm working with Corine Land Cover Accounting Layers files called "CLC2018ACC_V2018_20.tif.ovr" and "CLC2000ACC_V2018_20.tif.ovr". My goal is to get both qualitative and ...
3 votes
1 answer
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ReduceRegions not returning values in Google Earth Engine

I am trying to reduce the percentage of crops from the CGLS-100 Landcover dataset for a set of points uploaded as asset from a shapefile. This is an operation that I've done tens of times, but for ...
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Calculating area of single class in Google Earth Engine

I'm doing a research about evaluation of the effect of catastrophic forest fires in Yakutia in 2021. I did some classification of three different classes: 'burned_area', 'vegetation' and 'water'. Here'...
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Landcover image coverage of each class in study area

I want to define a dictionary with landcover type and their coverage in my study area. I wrote the code as below, but it is not working as I want. How can I define a dictionary or another datatype to ...
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Calculate coverage of class types in GEE

I want to define coverage of each land cover type in my study area in Turkey-Isparta. I call ("COPERNICUS/CORINE/V20/100m/2018") dataset and restrict it for my region as below (I load ...
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Importing img in QGIS - Unsupported Data Source: "file.img" is not a supported raster data source

I know there are similar questions out there, but none of them answer my question/are helpful for a complete beginner. I can code on R, but am completely unfamiliar with coding in QGIS. I am trying to ...
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Raster Merge Tool QGIS 3.16.11

I am performing Raster-> Miscellaneous-> Merge tool using QGIS version 3.16.11 to merge approximately fourteen Landsat8 OLI images. These images are stacked using Bands2-7 and while create the ...
5 votes
2 answers
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Counting pixels of each land cover type within each polygon from raster image using R

I have the following raster image that shows the different types of land covers on the island of Maui (there are 22 in total): The island is divided into "mokus" or large districts, which ...
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Train SVM at higher spatial resolution than the data that is to be classified?

I want to use support vector machines to classify landcover of a raster image and compare the results for different spatial resolutions. I will simulate the coarser spatial grain by aggregating ...
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1 answer
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Resolving land use/land cover misclassification

I'm relatively new to RS, I've been using Landsat Collection 2 Tier 2 data for my land use maps in ArcGIS Desktop. The problem is that my AOT has scarce rural built up area, due to which other barren ...
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Running tabulate area command on Esri tiled imagery layer

Esri recently released a tiled imagery layer of land cover at 10 meter resolution. I'm interested in pulling stats from it based on county boundaries. I tried using the Tabulate Area command and it ...
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How to load Esri 10m land cover data in QGIS

Esri just released a global 10m land cover file. It is being served as an image server here https://tiledimageservices.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/Esri_2020_Land_Cover_V2/...
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Exporting a stack image from Google Earth Engine to drive results in a very small file

I am trying to export a stacked land cover type image (24 bands) from the MCD12Q1 product (MODIS Yearly Land Cover Type) clipped to my Area of Interest (Rwanda). I am using the following code: // ...
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Is there a land cover type image collection on Google Earth Engine that covers the period 2000-2020?

I am conducting an analysis that requires a land cover type time series for the period 2000-2020. The only land cover type time series that I could find covering this period is the one being produced ...

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