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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13 views

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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2answers
53 views

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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1answer
24 views

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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26 views

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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1answer
34 views

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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184 views

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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42 views

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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36 views

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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13 views

Creating and Labeling time series (features)

I am trying to carry out crop type identification using optical remotely sensed data of Sentinel-2A. I am new to both fields (remote sensing and machine learning) and I want to use time series (NDVI, ...
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1answer
38 views

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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1answer
111 views

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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25 views

Fire Danger Forecast index- classification - USGS

I recently downloaded a raster image called Fire Danger Forecast index from USGS - Fire Danger Forecast, and I wanted to get the probability of fire for a set of points I have in another layer, but ...
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39 views

How to predict the whole image through trained classifier and visualize it as classified landuse and landcover image(LULC)?

I am working on LULC classification of sentinel-2 image(4-bands) using Machine Learning algorithms.I split the whole image into 64*64 patches and assigned class label(builtup,barren land,water and ...
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23 views

Google Earth Engine: Collecting Region Samples through image collection and merge them

I am using S1 Imagecollection to start a temporal supervised classification. Firstly, I added polarimetric indexes and other data as bands in each image. Then, I filtered the image collection and got ...
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1answer
29 views

Automatically fix overlaps by weight/occurrence

I'm working on a project where I have asked a number of individuals to digitize the same features on the same satellite image. For example, an image of a coast where a group of individuals each draw ...
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1answer
38 views

Sentinel-2 images

I am going to use Sentinel-2 images for crop type classification, and I am new to remote sensing. I want to know if there is an added value when using both L2A and L1C images. From what I understand, ...
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42 views

Problem exporting a large classified image in Earth Engine

I am trying to export a GeoTIFF image but it doesn't work. https://code.earthengine.google.com/fe534ace7f3fc4fdfd155ded24155525 When I export the large classified image to Google Drive, I don't get ...
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2answers
59 views

What cell size do I use when the raster cell size is larger than the zonal vector features for Zonal statistics as table tool?

I want to calculate the mean precipitation from a PRISM raster for a land use data layer using the Zonal statistics as table tool for ArcGIS 10.7. The land use vector layer contains over 20,000 ...
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9 views

Sentinel-2-L2A band compositing

Is it possible to create features from composite bands for the task of crop type classification using machine learning and python? (just like using NDVI data).
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1answer
199 views

Dealing with NAN values in my training dataset

I am new to remote sensing. I am working on a project where I need to perform land use land cover classification. For such a task I want to use machine learning (python). My features contain 'BANDS' (...
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1answer
71 views

Area calculation

I have a composite image collection which I used for land use classification. I want to calculate the area of the feature collections. The code I have used is: // Composite an image collection and ...
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23 views

Are 'salt-and-pepper effect' and 'salt-and-pepper noise' the same?

I am wondering if 'salt-and-pepper noise' and 'salt-and-pepper effect' do refer to the same thing. Pixel outliers can have two sources: outliers due to variations within a given pixel (e.g. one of ...
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1answer
30 views

Calculating LULC change 1973-2014 of a classified map (raster converted to shapefile) in ArcGIS 10.6

I am attempting to workout landcover change between two classified landcover maps. Ideally I want to show percentage change between the years per landcover type. I think I have done this but I am ...
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1answer
82 views

Landsat-8 level 2 DN to reflectance

I have downloaded a series of Landsat-8 level 2 images. My main purpose is to obtain reflectance out of them; however, the scale of the different bands does not look like reflectance (e.g. Blue Band ...
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230 views

Validation SVM classification on Google Earth Engine

Can someone please help me to write the code for the Validation of the classified images resulted from a fusion between Landsat and Corona images. The code below but I keep getting errors about the ...
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1answer
188 views

Scripting color palette to align with corresponding classes from supervised classification in Google Earth Engine

When I display my classification map, the colors don't line up with the variable that I want them to. For example, my forest category is represented as red (instead of my goal color-green), or my ...
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0answers
1k views

AttributeError: 'NoneType' object has no attribute 'GetFeatureCount' [closed]

I am trying to use the Landscape Vector Overlay function in the LecoS plugin to calculate the amount of various proportions of land cover types (using an ordinary landscape raster) within buffer ...
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1answer
221 views

How to apply trained classifier to entire Landsat collection in Google Earth Engine

I have classified the 2019 image using Google Earth Engine. How can I use the training data and code I have for 2019 and apply it from 1984 to 2018 instead of training/running a code for each image ...
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2answers
133 views

Densify and smooth out categorical raster with diagonal neighbors

I'm classifying vegetation types in QGIS (3.10). I have a pretty coarse raster that I want to smooth out. The standard approach seems to be to polygonize and then apply various smoothing algorithms (e....
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1answer
59 views

Get polygons of crop classification from the Land Parcel Information Systems (LPIS)

I'm trying to get\download polygons of fields with crop type. There is a USA database called cropscape which is very friendly. There is also a European one called Land Parcel Information\...
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1answer
266 views

Splitting up a region into training data and validation data for Landsat7 classification

I am building a classifier for Landsat7 by using MODIS land cover classification. My goal is to split up my region of interest into 80% being training data and 20% being validation data (with a ...
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366 views

Replace specific raster class by surrounding classes

I have a classified landcover raster which also contains the classes "clouds" (pixelvalue 5) and "shadows" (pixelvalue 10). I want to eliminate them by replacing these two classes by the majority of ...
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45 views

Measuring area of raster within polygons using QGIS

I am trying to use QGIS3.10 to analyze the area of forest within regions. It looks like this where the polygons belongs to WFS layer and Rasters belongs to WMS layer. The legends fo Raster suggests ...
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23 views

Creating boundaries for Land-use classification

I have done the land use classification for sentinel imagery. Now I want to create boundaries, within that classified image, enclosing different classified section. For example boundaries for water, ...
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1answer
84 views

Classifying type of crop on satellite images using Python [closed]

I'm trying to make a classification on the send with python, but logically I find all the vegetation that I don't care about. The even more serious fact is that if the species is not present in a ...
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1answer
61 views

Classifying land use in polygons using aerial imagery

I am trying to use the shapefile here: https://environment.data.gov.uk/DefraDataDownload/?mapService=EA/HistoricLandfill&Mode=spatial to work out how much of the sites are covered in trees. I ...
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44 views

Export classifier from SCP Plugin for use in other image classification

I have run a classification using the SCP plugin in QGIS. I want to recreate these results in a neighboring area and I am looking for help to see if it is possible to save the classification ...
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1answer
208 views

Working/Functioning of “sampleRegions” function in Google Earth Engine

I am doing land use classification in Google Earth Engine. I am using three different classes(forest, building, water) for classification. For each class, there is a shapefile containing polygon ...
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1answer
197 views

How to visualize data for a specific class in change detection plot in R?

I have created a change detection plot shown in image below for two rasters having 6 classes each using the code below. Now the plot, shows the change for all the classes but i am interested in only ...
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2answers
337 views

Converting output of crosstab() in R to raster; from classified raster images to show overall land cover change in different classes?

I have two classified landsat images from 2014 and 2018 both of them containing 6 classes including urban,forest,barren etc. In order to see how each pixel's class changed or remained same from ...
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2answers
80 views

How to define new classes from a change detection raster layer [closed]

As part of my thesis, I'm looking at the atmospheric and landscape effects of the 2018 wildfire in the Algarve. As part of the process, I want to estimate total biomass loss so I have classified two ...
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1answer
195 views

Do I need to perform any corrections on Level-2 Landsat imagery?

My objective is to perform a land cover classification with multiple scenes over historical imagery (one year every decade). Most of the imagery I have downloaded is level-2 imagery. From my ...
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1answer
269 views

Calculate area of overlap within polygons

ArcGIS Pro 10.6 I have a polygon layer with a column of 5 unique values, class names. I have a second polygon layer with a column of unique values, Parcel number. Each parcel will have multiple ...
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1answer
200 views

Classifying coordinates on land/on water using QGIS?

I am a new user of QGIS. I'm looking for a solution for my problem. I have my own dataset providing the latitude and longitude of different unique ID's. Now, I would like to classify those ID's that ...
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147 views

Performing supervised classification with Landsat 7 in Google Earth Engine

I am trying to perform landcover classification of Shanghai using JavaScript in Google Earth Engine. I am a complete beginner at this and I have been going through many tutorials trying to figure ...
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96 views

Conducting Land Cover Signature Classification on Google Earth Engine?

I was wondering if there is a way to conduct Land Cover Signature Classification, as specified on page 122 of the following user manual: https://buildmedia.readthedocs.org/media/pdf/...
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32 views

Correct translation of Norwegian landcover classes derived from WMS?

I am making a map of the study site located in Norway. I have accessed the awesome and free WMS data regarding landcover (I guess: N250 Arealdekkeflate) https://openwms.statkart.no/skwms1/wms.topo4....
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Quantifying level of urbanization of catchment over time?

I am studying the impact of urbanization on the discharge levels of a river during flooding events. For this, I need to determine the catchment's percent urbanized area through land classification ...
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1answer
171 views

Array in python just full of zeros when opened using GDAL

I'm working on the below script. What I'm trying to do is create a stats.txt file output which has the Land Cover Class ID, Fractional Coverage (of that class) and the number of pixels (of that class) ...