Questions tagged [land-classification]
A cartographic delineation of distinct land areas, identified by their geology, topography, soils, vegetation, climate conditions, living species, habitats, water resources, as well as anthropic factors.
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Array: Max (NaN) cannot be less than min (NaN)
I am trying to do Object-based Image Analysis, but my code is giving me this error, "Array: Max (NaN) cannot be less than min (NaN)." I tried to fix it but somehow it's not working. Kindly ...
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Getting error - "FeatureCollection (Error) User memory limit exceeded."
I am facing the following error on Google Earth Engine (GEE) -"FeatureCollection (Error) User memory limit exceeded" while trying to perform a Level 2 Land Use Land Cover Classification (...
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GEE - random forest doesn't classify my whole image
I'm new to GEE and I'm trying to do a machine learning supervised classification using random forest. it turns out that I made a code taking different parts of other codes and it works well for small ...
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How to mask a raster and apply an unsupervised classification? R
I am getting the error:
In matrix(values, nrow = ncell(x), ncol = nlayers(x)) :
data length [6691] is not a sub-multiple or multiple of the number of rows [25628]. In reaction to knr <- setValues(...
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How to use all pixels covered by training polygons for random forest classification in R
I have a training dataset containing around 350 polygons and their land cover classes which I use to train a random forest classifier to classify my raster image. I would like to use the values of all ...
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How to classify land use change
I’m trying to classify land use change in Google Earth Engine. The classification is made by using pins to assign different reflectance indexes to different land use types. However, when I change the ...
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Interpolating missing pixels from land cover classification map
On Google Earth Engine, I created a classified land cover map based on a composite of images (spanning 2 years). It's a time series study so increasing the range of images (i.e. increasing to more ...
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Is it possible to output a value (feature class) along specific increments along a given route?
I have a .shp file of a route (ie., the route of a cable) and a .shp file of the various sediment classifications covering the entire area of the route.
I was wondering if it was possible for QGIS to ...
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Opening images layer stacked on ArcMap into ERDAS
I noticed that ArcMap can open almost anything but if I do a band combination or a supervised or unsupervised classification on ArcMap I cannot open it on ERDAS.
Is there a way around it?
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Support Vector Machine (SVM) using QGIS
I want to classify Sentinel-2 images using QGIS and SVM. Please provide me with guidelines/instructions or a video tutorial link. I'm new to QGIS. I observed that there are numerous videos for SVM ...
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How to apply "where" condition for an image collection
I am trying to create annual wetted channel for multiple years which I have to do 3 noise removal steps after calculating MNDWI. But I realized that there is an error in the second step (minSize line ...
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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 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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Is there a way to make land classifications with simple RGB satellite images?
The area of interest I am working on mapping is quite small, just under 10 acres. I need to create simple landcover vectors (trees, low vegetation/grass, water). I don't have access to high enough ...
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L7 issue with land use classification in Earth Engine
I am trying to classify land use in earth engine with L7 imagery, however a chunk of the region of interest is being left out as seen in the image.
The code can be found here:
//Set map centre
Map....
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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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GloH20 Global Koppen Geiger Raster Values
I am trying to use the global KG classification raster from http://www.gloh2o.org/koppen/. Everything seems to be working fine, but the values from the raster seem to range from 0 - 30, however the ...
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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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Created weighted sample points in ArcGIS Pro
I have a classified satellite image and I want to create a confusion matrix to check its accuracy. Instead of doing a "simple random sample", I want to do a weighted sample, where there is a ...
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How to classify tree cover overlapping roofs in eCognition
This might be a fairly simple question, but I'm new to eCognition. I'm using Developer 10.2. For canopy that overlaps rooftops, I need to define these areas as separate objects and classify as canopy.
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No valid training data were found [closed]
I'd like to use randomforest to create a classification model, but when I want to classify landcover in 1986, it always says the error:
No valid training data were found.
Here's my code:
var dp2021 =...
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How to combine Legend Values of existing LULC in GEE?
I'm trying to refer my study area with this amazing LULC, I found on Earth Engine Apps, but it has about 255 legend values. I am not understanding how to proceed with this classification of my study ...
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Creating CNN model for multi-class image classification using Google Earth Engine
I am trying to build a satellite image classifier CNN using Google Earth Engine.
I have been following this tutorial: https://colab.research.google.com/github/google/earthengine-api/blob/master/python/...
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Exporting a classified image in GEE without getting a BLACK raster image
I have been trying to export this classified image. I want my GeoTIFF file to show this view...
But every time I export, my image turns out Black. after some digging i got to learn that I need to ...
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Layer error: No valid training data were found
I am creating soil land use classification through the use of ee.Classifier.smileCart().
I created the variable training, but I got an error:
Layer error: No valid training data were found.
// This ...
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landsat C2L2 random forest classification
I want to apply random forest classification on landsat C2L2 data.
I found code for Landsat Top of Atmosphere (TOA) collection but i think its better to use C2L2 colection (i will be so glad if any ...
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Eliminate isolated pixels in Google Earth Engine classified image
Is there a way to eliminate isolated pixels just like we can do with the classification sieve of the QGIS SCP plugin?
I've done a classification of an image that contains many isolated pixels which I ...
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Showing the land cover class area in the Google Earth Engine chart
I've produced a classified map in GEE and trying to create a chart showing the area for each landcover class. The code I'm using is as follows,
var classNames = ['vegetation Covers', 'Water Bodies', '...
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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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Calculating raster land use zone characteristics for multiple circular buffers derived from lat long coordinates in QGIS 3.12.3
Calculating raster land use zone characteristics for multiple circular buffers derived from lat long coordinates in QGIS 3.12.3
I am running QGIS 3.12.3. I have 150 circular buffers at 1KM, 4KM, ...
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Raster comes in black square outside my shape layer while performing unsupervised classification in QGIS
Any idea why my raster comes in black square outside my shape layer while performing unsupervised classification in QGIS? How can I correct this?
Tried correcting it by adding 100% transparency for ...
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LULC Classification of Sentinel-2 Using XGBoost in R
I am trying to do Land cover classification using xgboost in R language.
These are the following steps:
> library(raster)
Loading required package: sp
Warning message:
R graphics engine version 14 ...
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Reclassify values of the land use land cover class of Copernicus Global Land Cover Layers in Google Earth Engine
I am using the Copernicus Global land cover layers:CGLS-LC100 collection 3 data set.
I want to reclassify the value of the lulc for my application.
Map is showing but when I want to reclassify the ...
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635
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Object-Oriented LULC Classification in Google Earth Engine
I am testing a object-oriented LULC classification approach in Google Earth Engine, using the code available at the following link: https://code.earthengine.google.com/4032fe102252b285ec249f395d0d6d0f....
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Alternative way of correctly classifying Landsat images
I am conducting a supervised classification of Landsat 8 image. I have 6 classes: river, forest, built-up, brush land, grassland, and agricultural land. I assessed the spectral separability of each ...
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While clipping a Raster generated from SCP plugin (classification) all the colors are vanished in the end output and the raster generated is in B/W
I have done all the LULC classification using SCP plugin. after completing my classification, I wanted to clip the raster using a Shape File. But when I do it, the colors are vanished in the output ...
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I have a satellite image. I want to sample all the trees and vectorize them at once
I have a satellite imagery. I want to vectorize all the trees at once by color sampling. How to do it?
I used Photoshop to sample the all the various color ranges of trees [Green] to distinguish ...
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Validate a supervised classification in Google Earth Engine using ground truth data
I ran a supervised classification in Google Earth Engine (GEE) using the following script.
// add an image, bounds, filter data and sort by cloud cover
var limitiNapoli = 'PathToMyasset'
var image =...
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Adding values to landuse class raster using ArcMap
I am currently working on a map that holds my animals' projected radio-locations from my work this summer.
I have a current land class map downloaded from the USGS of the site; however, some of the ...
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Build land classes from GIS data
I have combined geo-referenced terrain, climate, and soil data with the requirements of the different agricultural food crops in order to build land classes that tell you where which crop can be grown....
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Classifying USA medical facilities as rural or urban from address or zip code R
I have a list of thousands of USA medical provider locations (street addresses, zip code and state details) and I need to classify each one as either urban or rural. I have no lat long details and my ...
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Problems with no valid "nodata" value
I'm trying to use the "lecos" extension and I took an already classified image from the mapbiomas website, cut it out to my area of interest, then reclassified to have in a .tif file only ...
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Preparing training data for crop species classification from drone images
I have high resolution multispectral (R,G,B,NIR,RE bands) images of a field taken from MicaSense RedEdge mounted on a drone. There are various species of crops planted. I want to classify the crops or ...
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Land cover data to create single colour polygons
I am trying to replicate the map here https://www.cdc.gov/yellowfever/maps/africa.html
I have downloaded land cover data, which is what the Northern countries are based on, from https://www.diva-gis....
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ArcGIS Pro Classify Raster Failure ERROR 002834
I am trying to run the Classify Raster tool in ArcGIS Pro 2.5 using an .ecd file generated from the ISO Classifier tool. I am using a composite of Sentinel bands run through the PCA tool and an ...
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Error in Built Up area Classification using Landsat 8 in google earth engine ( SVM, RF and Cart)
I am using Earth Engine to Classify an area using supervised classification with a combination of reflectance bands and indices. The built-up area gets mixed with fallow land (bare soil) and I have ...
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Highly Imbalanced dataset
I have a dataset (vector data) that contains the polygons and their corresponding crop type. This data is highly imbalanced i.e, I have a lot of classes that contain one sample only, as shown in the ...
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Performing land cover classification over whole country
I am doing land cover classification over the whole country of Djibouti.
I am downloading Sentinel 2 images for this purpose. I have realised doing land cover classification over a large area needs ...
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Why using buffers in land use / land cover classification task?
I am following the tutorial How To: Land-Use-Land-Cover Prediction for Slovenia and I would like to understand why they used a positive buffer (expanding boundary limits) in the first part of the ...
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