Questions tagged [random-forest]
An ensemble classifier that consists of many decision trees and outputs the class that is the mode of the classes output by individual trees
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1answer
48 views
Getting forest area (km2) of a region after the classification by RF considering the >10% tree cover and 0.5Ha?
I am trying to make a yearly image collection using Landsat images, then trying to make a classification using Random forest for the image of the years 1990, 1995, 2000, 2005, 2010, 2015 and 2020.
I ...
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0answers
38 views
Smile Random Forest / computation timed out /Computed value is too large
I want to make a binary clasificación (1 = burned area, 0 = non burned area) using smile random forest, to train Sentinel 2 SR (12 band included NDVI and DBR) and get new burned trained areas.
I try ...
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1answer
32 views
Seeking Random Forest R Code for Temporal Datasets [closed]
I have images from 4 different years and field datasets that correspond for each year.
Is there an R Code for Random Forest that will give me a classification map based on the 4 images and their ...
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44 views
PCA for Sentinel2 SVM and RF classification
I am attempting to classify dump pile in google earth engine. Using Sentinel 2 data and classifying the first 5 PCAs lead to the best visual result. Here the PCA code used in script with Sentinel2.
...
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27 views
How to compare the results of the random forest algorithm with the other SDMs?
I'm using the random forests algorithm in species distribution context. I have presence-absence as a dependent variable, so I decided to work with classification. At this point, I recovered the ...
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0answers
72 views
“User memory limit exceeded” during Random Forest classification in GEE
I succeeded in an initial attempt at using Random Forest classification on my input image (an exported mosaic covering ~ 2,797 km2). I used 30 trees, classified based on 4 bands, and passed a training ...
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0answers
22 views
GEE create chart for the area of classified image
In Google Earth Engine I have classified a mosaic image using Random Forest, and using reducer the area of each class classified was determined by the code below.
var area_classified = ee.Image....
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2answers
91 views
“User memory limit exceeded” using Random Forest classification
I am trying to classify using randomForest classification in GEE . However, I always get the error User memory limit exceeded, so I assume the number of the feature are too large.
Nevertheless, I saw ...
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0answers
24 views
What Explained Variance is good to proceed with Predictive Soil Mapping?
I have 1851 soil samples data on pH covering a study area of 7482sq.km in northern Ghana and I am using 52 environmental long-term average variables (Relief, Climate, MODIS Reflectances and derived ...
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0answers
75 views
Training Random Forest using more than 5,000 samples
I'm estimating forest biomass using Random Forest regression at a large scale. I want to train the Random Forest model using as many samples as possible (~100,000 samples), but it seems the Google ...
0
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1answer
128 views
Normalising image bands in google earth engine before classification [closed]
I have an image that has four bands. Three of them are derived from Sentinel-2 to give NDVI, NDBI and SAVI. The fourth band is derived from a Sentinel 1 SAR image collection. The Sentinel 2 bands have ...
0
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1answer
46 views
Can we use “evaluate” function for other models not included in dismo package?
I'm using several models to predict species occurence probabilities. Some of them are not included in dismo library such as "MARS" and random forests. I want to know if I still can use "...
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26 views
Running Train Random Trees Classifier which classifies by probability and not discrete classes using ArcMap
I have a a series of points which values' are a binary of a feature being present or not-present and a multiband raster of various landscape varables.
Is there a way to use random trees classification ...
2
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0answers
44 views
Calculate and plot the feature importance of the input dataset of a random forest classification within Google Earth Engine (GEE)
I run a random forest classification for agricultural land use and other land cover classes (12 classes). My dataset for 2019 consists of a Sentinel 1 and Sentinel 2 monthly time series, statistical ...
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0answers
58 views
random forest image classfication on python
I am new to python, I would like to do a rf classification on an multispectral image which I applied the PCA.
After applying acp on different bands including NDVI I got negative values, after that my ...
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0answers
111 views
Calculate and plot the feature importance of the input dataset of a random forest classification within Google Earth Engine
I run a random forest classification for agricultural land use and other land cover classes (12 classes). My dataset for 2019 consists of a Sentinel 1 and Sentinel 2 monthly time series, statistical ...
0
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0answers
48 views
Accuracy assessment of RFclassificatiton in dzetsaka plugin QGIS
I tried random forest classification on dzetsaka plugin in QGIS to discriminate different plant species using sentinell(10m) and planet(3m) image. Classification is performed but i am confused about ...
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26 views
How to drawing ROC curve in Orfeo Toolbox
I would to like to known how i plot the roc curve after training the machine learning model in orfeo toolbox/monteverdi GUI. I have the matrix error of the model.
I used Large scale mean shift ...
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2answers
147 views
Combining imagery, masking and sampling in Descartes Labs Platform
I am trying to sample data from Descartes Lab imagery to train a random forest classifier in the Descartes Plaform for an agricultural region. I have already written a script to prepare the imagery of ...
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0answers
50 views
Classified image using RF method in R displays less no. of classes than it was trained to
I am trying to classify crops using Sentinel-2 image including 10 classes, using randomForest classification in R. For that, I extracted 2000 random samples points from the training areas for 11 bands ...
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1answer
417 views
SMILE classifiers/regressors in Earth Engine
I am working on a project intended for publication that leans heavily on Earth Engine for much of the workflow: assembling, compositing, and mosaicking lots of images from multiple data sources, ...
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1answer
73 views
Raster image error when entering stack layers using Rstudio
I am a beginning user of Rstudio, and
I want to run Random Forest by using a couple of "raster layers" which were stacked in ENVI.
Before doing stacking I checked the cell size and the ...
3
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1answer
550 views
Results of Variable Importance of RF Classifier in GEE
I create a RF modulu in GEE like this;
//Random Forest Result Function Module
exports.getRfResults = function(image, title, bands, trainPoint, testPoint, area, label) {
//Create Sample Points ...
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0answers
255 views
Memory allocation problem when running Random forest regression in python
I have image with 4 bands . I want to see if I can predict the first band using the 3 other bands.
My problem is that I cannot fit the model because I get the following error message:
MemoryError: ...
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2answers
394 views
How does the randomColumn() function in Google Earth Engine work
Does the randomColumn() function assign an arbitrary random value as a collection element property or is it based on some aspect of the collection element?
For instance, I have a script that calls ...
3
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1answer
143 views
Calculate new band for satellite image after predict values with RF
I have satellite image which contains 3 different bands.
I'm using Python (jupyter notebook) in order to calculate new band by applying random forest regression.
My problem is that after I have ...
1
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2answers
367 views
Probability of variable importance calculation error in Google Earth Engine
I am trying to calculate the probability of variable importance each bands for classification. Basically, I have 3 class but when I try to implement the probability of variable importance, the error ...
1
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1answer
108 views
Random forest classifier
I set up a script for supervised following the model from the EE tutorial -- Only thing I changed was to substitute Landsat 5 with Sentinel 2. The classifier does not give me any result -- Any idea ...
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1answer
145 views
Google Earth Engine Hansen Forest Cover - annual loss
https://code.earthengine.google.com/b15af44386f0770df3ba21d38022c8d6
I am trying to get annual forest loss using the Hansen dataset in Google Earth to get a video. I have added the yearly loss image ...
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0answers
127 views
ArcGIS Pro (2.3.0) Forest-based Classification and Regression Issue
I keep getting this error when I'm using the 'Predict to raster' Prediction Type in the Forest-based Classification and Regression tool:
'Problem extracting values from a.img using origin location [...
3
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0answers
3k views
Encoding categorical variable for random forest with sklearn
I have a random forest model that works pretty well, taking a bunch of vanilla remote sensing raster data as input. I think it could be improved with addition of some information that I currently have ...
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1answer
29 views
Leaving Image Objects that are Uncertain to be a Particular Class as 'Unclassified' in eCognition
In classification of the imagery, is there a way of leaving certain image objects unclassified? Say for example, if the classifier is uncertain what class to classify the image object as, does ...
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0answers
99 views
Random forest classification starting from a JSON file
I have a lot of images of Earth and I need to find the section of the image where there is water using random forest.
I also have one JSON file (not GeoJSON) that have all the image's information. ...
3
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1answer
407 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 ...
0
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1answer
125 views
Practical limitations of image classification of large rasters?
Been attempting (with no success so far) to implement the random forest classification in ArcMap on a reasonably large image. If I throw a raster with say 20-30 bands in it, works fine, just takes ...
2
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1answer
266 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
140 views
Using NDVI along with regular RGB and NIR bands for image classification
Is it plausible to use NDVI along with other regular bands for image classification related data processing?
Recently, I came across a comment that RED and NIR band might interfere with NDVI or vice ...
0
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1answer
997 views
Google Earth Engine really slow in loading maps
I am using the code below to run random forest classification, clip and mask the layer, and then export the map to Google Drive. I expected the export process to be slow. Nevertheless, why are the ...
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1answer
545 views
No valid training data were found [Google Earth Engine]
I would like to create a classification model through randomForest model. I used Sentinel 2 dataset. Everything is working if I'm using the original bands for the predicted variable. However, if I ...
3
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2answers
3k views
Generating prediction raster from Random Forest model using R?
I fit a Random Forest model to tabular data from test sites in R, and now would like to generate a raster showing predicted probability values using raster data corresponding to the same predictors (e....
0
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1answer
442 views
GLCM measure in an object-based classification?
I am trying to classify agricultural fields with randomForest model. I will conduct an object-based classification. To do so, in the code by Ned Horning, I provide the boundaries in a shapefile. The ...
1
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1answer
397 views
ArcGIS Pro Forest-based Classification and Regression fails with error
I'm trying to run a Random Forest Classification and Regression in ArcGIS Pro 2.3.2. I've already run this analysis using Bayesian logistic regression in R, and want to compare the results from RF.
...
-1
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1answer
552 views
Classify polygons with Random Forest on Python
I have a segmentation shapefile made with e-cognition containing many polygons of which a part classified for the train file. I would like to classify them by applying labels (e.g. water, vegetation, ...
2
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2answers
923 views
Difference between GEE and sklearn random forest output
I am training a random forest in GEE to predict canopy cover. See here for example. Implementation of RF is
var rf_model = ee.Classifier.randomForest(5).train(to_TrainAll, target, bands);
My ...
3
votes
1answer
1k views
Calculate variable importance for classifications in Google Earth Engine
I am doing a simple Random Forest classification in Google Earth Engine. I try to classify upland, water and wetlands, using 25 variables derived from one year of Sentinel-1 images. The classifier ...
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0answers
253 views
Using output of unsupervised cluster analysis to train supervised classification for vegetation mapping?
I'm using Google Earth Engine to classify mangrove forests from Landsat imagery to calculate extent. Let's say I perform an unsupervised K-means cluster analysis on a Landsat scene to identify general ...
1
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2answers
455 views
Is the Random Trees Classifier in ArcMap 10.5 equal to Random Forest?
Is the Random Trees Classifier in ArcMap 10.5 the same as what is named Random Forest in other applications/software?
I see that the parameters are the same and the design seems the same, but I need a ...
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0answers
111 views
Crash after performing random forest using enmap box and dzetsaka
i want to perform random forest classification using tools like dzetsaka and enmap box on qgis 3.2 version but after classification completes upto 50 percent qgis crashes what can be the issue
3
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2answers
325 views
Classification model using NDVI time series?
I am trying to form a classification model with the help of NDVI time series data. I want to use methods like SVM and Random Forest. I know how to apply these methods to normal data. But, I am ...
2
votes
2answers
1k views
Load (input) and Save (output) rds files with R in QGIS script
I have done a Random Forest classification model in R and I have implemented a script to work in QGIS. For the moment I specify the model's path into the script to apply it (image), but is it any form ...
