All Questions
Tagged with random-forest r
32 questions
0
votes
2
answers
767
views
Error while trying to train RandomForest
I have the following data:
train <- data.frame("diff_ndvi" = c(-0.3064988852, -0.2991864979, -0.0002075136, -0.3066526055),
"diff_savi" = c(-0.4596679509, -0....
- 17
1
vote
2
answers
576
views
Loop rename rasters in brick or stack in R
I'm running a randomforest on a raster stack/brick in R. I know how to rename individual layers in the stack, but since my stacks have numerous Landsat scenes, I was hoping to loop through the stack. ...
- 385
1
vote
1
answer
224
views
Random forest classifcation for Sentinel-2 low out of bag but high prediction error
I used Random Forest for land cover classification on the Sentinel-2 images in a forest. I have 3 classes: forest (0), bareland (1), and cloud (2). My variables include 4 bands (B2, B3, B4, and B8), ...
- 379
0
votes
1
answer
3k
views
Cannot coerce class to a data.frame
I'm using R to run a random forest to predict the distribution of sediment classes in a study area. I have a .csv of the locations where sediment has been sampled, and rasters of all my predictor ...
- 3
-1
votes
1
answer
119
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 ...
- 359
1
vote
0
answers
289
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 ...
- 49
0
votes
1
answer
393
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 "...
- 95
0
votes
0
answers
134
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 ...
- 9
0
votes
1
answer
257
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
votes
2
answers
9k
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....
- 3,112
2
votes
2
answers
2k
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 ...
- 35
-1
votes
1
answer
310
views
Predicting Enhanced Vegetation Index using Random Forest in R [closed]
I am a master's student and I am trying to use radar observables derived from SAR imagery to predict Landsat 8 Enhanced Vegetation Index (EVI) for different seasons.
I have extracted EVI and various ...
- 67
3
votes
0
answers
773
views
Using Random Forest for big data?
I used Random Forest regression for my work, but now I have another problem because I have really big data. I am using a VHR and this is much raster information. My script in R is this:
rand.zero <...
- 117
3
votes
1
answer
2k
views
Confusion Matrix R
I'm having some problems to understand the result of my confusion matrix. Here is my case:
I've run a classification (random forest) on a satellite image. To do so, I created 50 random points for ...
- 1,128
0
votes
1
answer
2k
views
How to convert lat long coordinates into categorical value in R?
I have latitude, longitude coordinates as follows
latitude longitude
41.775974 -71.329887
42.184913 -71.9179
41.682957373 -71.56037000
I want to use it as one of the features in a ...
1
vote
0
answers
265
views
Supervised Random Forest in R
I did an image classification using random forest algorithm in R. I got the result but I do not understand what does the confusion matrix shows ? I mean what does the rows and column show?
These are ...
- 11
3
votes
1
answer
7k
views
Random Forest out of the bag and confusion matrix
I have implemented Random Forest classifier to classify remote sensing data in R. The original code comes from here:
How to perform Random Forest land classification?
Everything works fine, but what ...
- 76
1
vote
0
answers
167
views
Effects of heterogeneous vegetation in mapping canopy cover using randomForest in R
I have a 5.8 m resolution satellite image (LISS IV aboard IRS-P6, in the wavelength (micrometers): 0.52 - 0.59 (band 2),0.62 - 0.68 (band 3) and 0.77 - 0.86 (band4). The swath covers a densely ...
- 664
1
vote
1
answer
2k
views
The stability of randomForest models after increasing predictor variables
With reference to the posts: Incorporating terrain data to predict canopy cover using randomForest in R and Random-Forest Classification of 10cm Imagery for species-distribution in R (no point-shapes)
...
- 664
2
votes
1
answer
337
views
Incorporating terrain data to predict canopy cover using randomForest in R? [closed]
I have a 5.8 m resolution satellite image (LISS IV by IRS-P6, in bands 4, 3 and 2) of a densely forested region in the Eastern Himalayas (altitude 700 m to 3200 m). My objective is to predict regions ...
- 664
1
vote
1
answer
471
views
error of randomforest classification with Landsat data
I want perform randomforest classification on Landsat data. Here is some code I found from a paper. But when I run into the "classification" part, there is an error said "Error in eval(expr, envir,...
- 11
2
votes
1
answer
5k
views
Computing unsupervised random forest classification in R?
I want to compute an unsupervised random forest classification out of a raster stack in R. The raster stack represents the same extent in different spectral bands and as a result I want to obtain an ...
- 155
-2
votes
1
answer
676
views
R code for SDM using randomForest [closed]
I wonder if someone can provide me with R code for running Species Distribution model using randomForest where I can't find any tutorials or demos for this.
- 1
4
votes
1
answer
2k
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Performing Random-Forest Classification of 10cm Imagery for species-distribution in R (no point-shapes)? [closed]
I'm trying to classify 10cm-resolution images with the RF-package.
I do this to separate some species in the forest, seen on my images.
While I was searching for an answer, I found the following ...
- 147
11
votes
1
answer
3k
views
Multispectral image segmentation for natural-resources applications using R
R has the capacity for image segmentation, although all of the examples I have come across utilize a single band for the segmentation (example). I am interested in combining R's capacity for random ...
- 51.8k
3
votes
0
answers
472
views
R: Can raster predict function pass to predict.rfsrc (a prediction function in a parallel verion of RandomForest)?
It seems that raster predict function can pass to predict.randomForest by setting the "type='response'". I am using a parallel version of randomForest package called the "randomForestSRC" and I am ...
- 31
2
votes
1
answer
1k
views
Running Random Forest Classification on WorldViev-2 image in R - problem
I have a problem with performing RF in R for a WorldView-2 Scene. I've never ever before used R for remote sensing classification, so I simply followed what is written here.
I've loaded scene (8-band ...
- 23
2
votes
1
answer
2k
views
Using Regression Trees in ArcGIS
I have a follow up question to Statistical analyses for survey against raster?
I have a very similar problem as the initial poster David. I am creating a multivariate model from raster data in order ...
- 81
3
votes
2
answers
2k
views
How to utilise single 'randomForest' model for several rasters in R?
I am using randomForest package in R to derive species distribution models. When I predict the model to the RasterStack containing the predictors in which the values were extracted to build my model, ...
4
votes
1
answer
6k
views
Image classification random forest [duplicate]
I am a newbie in R. I want to classify images using random forest in R. I am trying to learn the codes. But in the mean time, is there a push button (like a gui) in R that can be used for ...
- 41
4
votes
0
answers
97
views
ArcGis Raster Resampling Question [duplicate]
Possible Duplicate:
How do you decide what interpolation method to use for resampling raster data?
I want to interpolate a certiain target variable over a large territory. I trained a random ...
- 1,087
33
votes
4
answers
19k
views
How to perform Random Forest land cover classification?
This is a follow-up to a previous post: Machine Learning Algorithms for Land Cover Classification.
It seems that the Random Forest (RF) classification method is gaining much momentum in the remote ...
- 51.8k