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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Error in preview of classification in QGIS

While doing LULC classification I am facing the following problem in QGIS. I am unable to do the following process. After selecting all the training inputs, I select classification in band-processing ...
Dibyendu Biswas's user avatar
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19 views

What is the most suitable band combination of Landsat 8 to distinguish the pixels of urban and barren land areas for LULC classification? [duplicate]

I am doing Land Use Land Cover Classification in GEE using Landsat 8 imageries. The problem is pixels of Urban areas and Barren land areas are visible in the same color. I tried with band 5, band 4, ...
Ahmadh Nabhan 's user avatar
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134 views

Use lookup table to create new raster layer based on values in multi-layer SpatRaster using R terra

I am doing an ecosystem classification project where I have 3 raster layers that each correspond to different ecological classes with different numbers of categories. I want to take the unique ...
Meirzev's user avatar
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155 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
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1 answer
73 views

Data arrangement in CSV file [closed]

I am getting whole data in a row while exporting CSV file . I need data in separate columns in CSV file. Soil variable value in a separate column and pixel counts against each soil variable in next ...
Khansa's user avatar
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74 views

Exporting classified land cover class as an asset for NDVI calculations

I have conducted a supervised classification in Google Earth Engine using Random Forest, to which I have provided the code. https://code.earthengine.google.com/3b3d4583f26a4651f4fbe10aa80c5f30 Map....
Erika's user avatar
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1 answer
64 views

Random forest classification on QGIS gets stocked at 66% with an error message whose conditions have been met

I am running a random forest classification on QGIS using dzesaka pluggin, after picking my training sites and running the classification, it gets to 66% and a prompt message appears that i ensure ...
Nkogho Uchenna's user avatar
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1 answer
46 views

Exclude areas with building from a map

In ArcMap, I'm trying to create a site suitability map for a solar farm but I have issues with the building footprint file. I'd like to exclude areas with buildings but I have no idea how to go about ...
Yfunfur's user avatar
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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
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1 answer
59 views

Change the order of my raster based classification

I am having troubles switching the order of my classifications of my raster, which originates from R language and imported into QGIS. In the attached image I am trying to switch around my grass and ...
Aaron_Elph's user avatar
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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
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151 views

How to use existing polygon feature class as training samples in ArcGIS Pro Classification Wizard?

I have created a polygon feature class from field observations at specific locations. I renamed the attribute table field containing the classes to "classname" as this seems to be important ...
avaruus's user avatar
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55 views

FeatureCollection (Error) Array: Max (NaN) cannot be less than min (NaN)

I am trying to do Object base Image classification, but my code giving me this error, I tried to fix it but nothing worked. This is an error, "FeatureCollection (Error) Array: Max (NaN) cannot be ...
Muhammad Waqas's user avatar
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137 views

Error: Computation timed out. (Error code: 3)

I am trying to perform Object base Image Classification, but it giving me this error, "Error: Computation timed out. (Error code: 3)". I tried to change the scale but this also not worked. ...
Muhammad Waqas's user avatar
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113 views

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 (...
Kedaravindan Bhaskar's user avatar
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353 views

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 ...
Alexandre Messias Reis's user avatar
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1 answer
136 views

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(...
Aaron_Elph's user avatar
1 vote
2 answers
171 views

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 ...
Jessie Qian's user avatar
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1 answer
103 views

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 ...
Ellie's user avatar
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84 views

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 ...
Linus AG's user avatar
1 vote
1 answer
28 views

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 ...
Jack Lakeman's user avatar
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72 views

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?
user217233's user avatar
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1 answer
138 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
2 votes
1 answer
121 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 votes
1 answer
229 views

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 ...
Riley Hughes's user avatar
1 vote
1 answer
188 views

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....
Danee's user avatar
  • 25
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1 answer
112 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
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1 answer
66 views

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 ...
A. Bollans's user avatar
1 vote
1 answer
175 views

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 ...
JB Shin's user avatar
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1 vote
1 answer
104 views

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 ...
TBI_PRK's user avatar
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2 votes
1 answer
99 views

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. ...
Anna Riling's user avatar
1 vote
0 answers
344 views

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 =...
Xuanhao Huang's user avatar
1 vote
1 answer
254 views

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 ...
Learner's user avatar
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1 vote
0 answers
528 views

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/...
Ege Akkaya's user avatar
2 votes
1 answer
1k views

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 ...
khairulkabir73's user avatar
0 votes
1 answer
676 views

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 ...
Aldo Torres Sales's user avatar
1 vote
0 answers
50 views

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 ...
Solmaz's user avatar
  • 149
1 vote
1 answer
2k views

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 ...
Badal's user avatar
  • 309
0 votes
1 answer
943 views

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', '...
Badal's user avatar
  • 309
0 votes
1 answer
86 views

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 ...
Ayushi Sharma's user avatar
1 vote
0 answers
52 views

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, ...
user188309's user avatar
0 votes
2 answers
73 views

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 ...
NISHANT MEHRA's user avatar
3 votes
1 answer
490 views

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 ...
Sahil's user avatar
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3 votes
1 answer
644 views

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 ...
GIS and Web's user avatar
0 votes
1 answer
873 views

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....
Hercilo's user avatar
  • 51
1 vote
0 answers
58 views

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 ...
Dan's user avatar
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2 votes
1 answer
211 views

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 ...
IRA_01's user avatar
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2 votes
1 answer
854 views

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 ...
IRA_01's user avatar
  • 43
2 votes
1 answer
1k views

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 =...
Carl's user avatar
  • 135
1 vote
0 answers
82 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 ...
Mick's user avatar
  • 11