Skip to main content

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.

Filter by
Sorted by
Tagged with
0 votes
0 answers
33 views

"Object which.column not found" when reading in land-cover dataset with stars (R)

I'm not sure where the problem lies--in R, a quirk of the dataset, my own computer? The dataset in question is a raster dataset of land cover in the United States. It's linked from the MRLC, but for ...
John Reaves's user avatar
1 vote
1 answer
12 views

Mean Copernicus landcover in multiple polygons with reduceRegions

I would like to estimate the average tree cover for each polygon of a Feature Collection, but the code below only returns empty values. I have tried using different Image Collections (like EVI) and ...
dchris's user avatar
  • 11
2 votes
1 answer
58 views

In ST_CoverageSimplify can the OVER() clause be used to reduce memory requirements?

With a large coverage of polygons in PostGIS, can the OVER() clause in ST_CoverageSimplify()(1) be used to PARTITION( by 'x') the coverage and possibly reduce memory requirements. My attempts to ...
BJW's user avatar
  • 487
0 votes
0 answers
22 views

Google Earth Engine Error: "Layer error: No valid training data were found"

I make a classification of landcover for 13 years from 2010 to 2022, but in 2022 I get "Layer error: No valid training data were found" //Pemunculan SHP var shp = ee.FeatureCollection("...
Paulus Mendeita Gurning's user avatar
0 votes
1 answer
70 views

ERROR while making a LULC map classification in Google Earth Engine

I am relatively new to utilizing the Google Earth Engine (GEE) platform, although I possess some experience in generating Land Use and Land Cover (LULC) maps using GIS software. Recently, I ...
Anindya Naskar's user avatar
0 votes
1 answer
48 views

Exporting Large Classification Image on GEE

I am new to GEE. I am trying to export a large land cover classification map on GEE, derived using Landsat 5 data through random forest classification. The classified map has 7 classes represented ...
TG_'s user avatar
  • 1
0 votes
0 answers
51 views

Zonal Statistics in QGIS

I am using raster layer zonal statistics in QGIS. I want to quantify the water yield contribution of each LULC class, but the results of the zonal statistics is greater than the value given by the ...
ccquinon's user avatar
0 votes
0 answers
279 views

Semi-Automatic Classification Plugin Error 6 Bands Missing

Whilst getting other people to run an unsupervised (ISODATA) classification in QGIS using the SCP (semi-automatic classification) plugin, several people obtained an error message labeled 'error 6: ...
Sharon Mandipe's user avatar
0 votes
0 answers
23 views

Base on land cover data to get plant functional types(PFT) by using GEE, but get something wrong

By using .reduceresolution() and ee.Reducer.mean() to reduce resolution from 10m to 10000m.But the result looks like taking the most distributed elements in the area and assigning them to new pixels. ...
john bob's user avatar
0 votes
1 answer
62 views

Pixel level landcover change analysis [closed]

I have two land cover maps in Geotiff format and need guidance on conducting a pixel-level change analysis. library(raster) set.seed(123) raster1 <- raster(nrows = 100, ncols = 100) raster1[] <-...
jmutua's user avatar
  • 373
0 votes
0 answers
141 views

Conducting change detection analysis on classified land cover classes in ArcGIS Pro

I have a feature class shapefile consisting of many mangrove polygons and one non-mangrove polygon for my study area. A screenshot of my attribute table shows I have classed mangroves as 1 and non-...
Erika's user avatar
  • 1
0 votes
0 answers
186 views

Recommended Projected Coordinate Reference System for Land Use Analysis in Northern Spain and Western Australia

I am working on a land use analysis project within QGIS that involves studying regions in Northern Spain and Western Australia. These regions span across multiple UTM zones, and I'm unsure about the ...
Lucas_Edenhofer's user avatar
0 votes
1 answer
246 views

Change detection for raster layers

I'm working with multiple raster layers representing LULC data, Corine maps, from various years. My goal is to identify the pixels that have undergone change and determine the specific transitions ...
Gencergis's user avatar
  • 109
-1 votes
1 answer
108 views

Can't find symbology layer for ESRI Global Land Cover

I have downloaded part of the ESRI Global Land Cover (https://livingatlas.arcgis.com/landcover/) as a raster but I am missing the symbology/legend info. The raster obviously contains numerical values ...
Jan Pisl's user avatar
  • 726
0 votes
1 answer
113 views

Filter images that are covered with my roi more than 80%

This is my collection with (453 elements) in it which I firstly added filterBounds(polygon): var collection = collection_L5.merge(collection_L7).merge(collection_S2); print(collection) But many ...
MohammadJavad Soltani's user avatar
0 votes
0 answers
76 views

Combine and reduce land cover and MODIS collections with different IDs

I need to add the information from Land cover Image Collection (2015-2019) to MODIS Image collection. In practice should be merged fuve land cover images with MODIS images for the whole five year long ...
Anastasiia's user avatar
0 votes
0 answers
208 views

Corine Landcover Change Layer Legend

I downloaded a Corine Land Cover Change Product (CHA 2006-2012) in raster format and opened it in QGIS. The values are between 1 and 44 but I couldn't find a legend that shows which raster values ...
Gencergis's user avatar
  • 109
0 votes
0 answers
17 views

Radiometric standardization for Landsat5 and Landsat8

I'm currently encountering an issue with classifying LULC. The first image I have is a false color composite taken in 2020 using Landsat 8. However, the second image, captured in 2010 using Landsat 5, ...
Jubier 's user avatar
0 votes
1 answer
190 views

Downloading dynamic world full rasters (not just mode) over a geography

I have been using the following Python script to download "modes" of the dynamic world dataset like this: mosaic = ( ee.ImageCollection('GOOGLE/DYNAMICWORLD/V1') ...
Ezekiel Barnett's user avatar
0 votes
0 answers
21 views

Identifying Grassland surrounded by Woodland

I am trying to identify patches of grassland that is surrounded or mostly enclosed by woodland. I want to find glades and pastures which are sheltered from the wind. Can anyone think of any tool that ...
Dylangussman's user avatar
1 vote
1 answer
160 views

Received too many arguments to function byFeature(). Expected at most 3 but got 4

I Used a boundary shapefile as geometry in Google Earth Engine, and got the error: Line 37: Received too many arguments to function byFeature(). Expected at most 3 but got 4 How can I solve this ...
Tapiwa's user avatar
  • 11
0 votes
0 answers
135 views

Merge many small polygons into larger shapes

I'm trying to build a landcover layer from the ESA Land Cover dataset. So far, I have been able to convert the image data to a bunch of very small polygons. But for my use, I really just want a "...
Craig Kochis's user avatar
0 votes
1 answer
297 views

Detecting Land Use Land Cover Changes from Copernicus Corine Maps in GEE - Calculating Areas of LULC Change Pairs

I'm trying to detect land use land cover (LULC) changes between 1990 and 2000 using the Copernicus Corine land cover maps in Google Earth Engine (GEE). However, I'm unable to find change maps in the ...
Gencergis's user avatar
  • 109
0 votes
1 answer
38 views

Looking for an API or easily readable format for land cover data

I'm working on a web application to take a look at the entire globe with a sim-city like experience. To build the world, I need access to land-cover data. One I've found is the CCI Landcover data. ...
Evert's user avatar
  • 117
1 vote
1 answer
354 views

"Image.select: Pattern 'blue' did not match any bands" error during LULC change detection using Earth Engine

I've been working on LULC change detection using Earth Engine. When I run to export any of the TIFF file I'm getting the same error. This is the error I get every time Error: Collection.toList: Error ...
Sai Sunil's user avatar
-1 votes
1 answer
116 views

Using land cover shp to extract another category raster for each type in R

For example, I have a land cover shp which has 5 types( 'forest','crop','desert','grass','city' ). And I have a classfied temperature tif whose values are 1:4, which means 'very high','high','low','...
jackywang's user avatar
  • 309
1 vote
0 answers
94 views

Applying aggregate function in terra to multiple raster files in a folder

I have 330 raster files in a folder showing landcover type. They are of a 10 m resolution and each file is approximately 3 MB in size. I want to change the resolution of all of the files to 100 m and ...
Nuwi's user avatar
  • 39
0 votes
1 answer
160 views

How to calculate proportion from frequency histogram for NLCD land cover data in Google Earth Engine

Within Google Earth Engine, I have reduced the USGS NLCD land cover dataset to my specific shapefile (consisting of 952 counties within the United States; I have limited my shapefile to the first 10 ...
sloth's user avatar
  • 25
1 vote
1 answer
194 views

How to reduce and export NLCD land cover data in Google Earth Engine

Within Google Earth Engine, I am trying to (1) reduce the USGS NLCD land cover dataset to my shapefile of 952 counties within the United States, (2) calculate the proportion of each land cover type in ...
sloth's user avatar
  • 25
0 votes
0 answers
18 views

Percentage of land cover within buffers from NLCD data in R [duplicate]

I have a dataset that contains geographical coordinates and their unique location names. I need to create a buffer around each and calculate the percent of land cover (derived from nlcd 2019 conus ...
Loon's user avatar
  • 11
2 votes
1 answer
182 views

Add to map only certain types of MODIS Land-Cover In Google Earth Engine

I'm trying to create a map on Google Earth Engine with only some Land-Cover class, but I can't find a solution to this problem. I'm using this MODIS dataset: MODIS/061/MCD12Q1/2002_01_01 I'm using ...
frog11235's user avatar
0 votes
1 answer
180 views

Filter by information embedded in ID string in Google Earth Engine

I'm working with the Dynamic World data, which is organized into tile-date images. I want to filter the image collection by tile IDs (Copernicus tiles var tiles T46QCJ, T46QDJ, T46QDK, and T46QCK. I ...
C. Ashley's user avatar
  • 405
1 vote
0 answers
57 views

Statistical test to assess significant difference in landcover selection

I have GPS collar data that I have used extract values to points through ArcGIS Pro on MODIS landcover data. From this I have a record on the number of times the animal has been in each landcover ...
Chelsea_VictoriaS's user avatar
0 votes
1 answer
315 views

Get probability time-series from Dynamic World dataset

I am trying to use the Dynamic World service in earth engine. For each 10sq meters every 10 min, it contains probabilities associated with 8 possibilities of land cover, like forest, grass, water... I ...
Rafael Frade's user avatar
0 votes
0 answers
22 views

Adding a new landcover type to existing landcover raster file

I have a NLCD raster file and I want to add pavement landcover type to the NLCD raster file. How can I create a new landcover raster file in ArcGIS Pro that has both NLCD and paved raster?
Aida Yahyavi's user avatar
1 vote
1 answer
618 views

GEE: applying a group reducer over an image collection

I'm trying to export a CSV file with the columns: Date, Vegetation type, Mean NDVI. Currently, I have an image collection with 2 bands: band 0 is NDVI and band 1 is vegetation type. I have been able ...
carissa's user avatar
  • 11
0 votes
0 answers
91 views

R Leaflet throwing "matrix(): subscript out of bounds" with an addGeoRaster object

I am trying to render a large GeoTIFF (meter-scale urban land cover or MULC from the EPA EnviroAtlas found here) in Leaflet along with other spatial data. Because of the size (approx. 65k x 80k) I'm ...
jlamb's user avatar
  • 1
1 vote
2 answers
497 views

Get class with highest probability from bands in GEE

I'm trying to use Google's Dynamic World classified rasters to get a land/water map for another tool I've built. I'm having trouble doing so. So far, I have essentially copied this code (in Python ...
Nick Brady's user avatar
0 votes
1 answer
29 views

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 ...
KubaH's user avatar
  • 1
0 votes
1 answer
158 views

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"...
Muhammad Waqas's user avatar
1 vote
1 answer
565 views

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 ...
Kora Lae's user avatar
2 votes
1 answer
129 views

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 ...
Kora Lae's user avatar
1 vote
2 answers
265 views

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):...
Leandra Merz's user avatar
0 votes
1 answer
451 views

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 ...
Danny's user avatar
  • 35
1 vote
1 answer
131 views

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 ...
Bikash Chandra Gupta's user avatar
0 votes
1 answer
124 views

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 ...
Jenny's user avatar
  • 1
0 votes
0 answers
299 views

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 ...
Shahriar Mim's user avatar
0 votes
1 answer
258 views

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 ...
ali sh's user avatar
  • 29
0 votes
0 answers
375 views

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 ...
Stud17's user avatar
  • 23
1 vote
0 answers
143 views

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. ...
codee's user avatar
  • 11

1
2 3 4 5
7