Devendra
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Accept 5 answers given by other contributors
Awarded to Devendra on 08 Apr 2024
Feeds
Question
Why two ENVI header files are different?
I have generated ENVI header file using MATLAB code is as follows; map_info = sprintf('UTM, %f, %f, %f, %f, %f, %f, %s, %s, uni...
7 months ago | 1 answer | 0
1
answerQuestion
How do I save 6bands layer stacked data in ENVI format?
I have layer stacked 6 bands of sentinel2 data which is in jp2 format after resizing green,red and nir to 20m resolution. I want...
7 months ago | 1 answer | 0
1
answerQuestion
How to use custom enviwrite code to use map_info for generating envi header file?
I want to use custom_enviwrite matlab code(attached) to use the map_info (attached) generated from sentinel2 image of jp2 format...
7 months ago | 1 answer | 0
1
answerQuestion
How to use Matlab to get georeferencing information of a JP2 image?
I request you to kindly let me know how to extract with Matlab the georeferencing information of a JP2 image? I'd like to read ...
7 months ago | 1 answer | 0
1
answerQuestion
How to get map information from jp2 images ?
I am using following matlab lines to layer stack 6 bands(green,red,nir,rededge5,rededge6,rededge7) of sentinel2 satellite data. ...
7 months ago | 1 answer | 0
1
answerQuestion
How do I resample my 3 bands data?
I am using following matlab lines to resample my 3 bands of 10m resolution to next 3 bands of 20m resolution. But it is not bein...
7 months ago | 1 answer | 0
1
answerQuestion
How to define variable names for resampling?
I am using following code to resample the 10m green,red and nir bands to 20m resolution; % Resample the 10m bands to 20m if i...
7 months ago | 1 answer | 0
1
answerQuestion
How to use enviwrite in matlab?
I am using enviwrite function of matlab as follows image = data(logical_mask); fname = string(img_names(m)) + '_' + '7bands' ...
7 months ago | 2 answers | 0
2
answersQuestion
How do I interpolate and smoothen ndvi time series?
I have ununiformly distributed noisey ndvi time series. I want to interpolate and smoothen it using matlab. I am attaching the s...
7 months ago | 2 answers | 0
2
answersQuestion
How to join variables in the title of plot?
I am using the matlab lines as follows title(['PCA scores', method, par]); where method and par keep on changing for different...
7 months ago | 2 answers | 0
2
answersQuestion
How to mask pixels of certain ndvi values?
I am using following matlab code to divide the parcels into cropland and non cropland if mean(parcel_ndvi(idx == 1)) > mean(par...
7 months ago | 1 answer | 0
1
answerQuestion
How to assign new variables?
I am using following lines of matlab code to assign new variables to print on plot. if(dependent_vars{jj} == 'act_y_...
7 months ago | 2 answers | 0
2
answersQuestion
Why fitlm function is giving wierd results?
I am using following code % PCA [coeff, score, ~, ~, explained] = pca(X); X_pca = score(:, 1:10); ...
7 months ago | 1 answer | 0
1
answerQuestion
How to use geoplot not to show right bottom annotation?
I am using following lines of matlab GT = readgeotable("C:\Shape_India\india_state_geo.shp"); GT.Shape figure geoplot(GT,'fa...
7 months ago | 2 answers | 0
2
answersQuestion
How to equally stretch horizontal bars?
I am using the following matlab code available on mathworks for making horizontal bars. dataStart = [1, 2, 3, 4; 4, 5, 6, 7; 7,...
8 months ago | 1 answer | 0
1
answerQuestion
How to convert dates into Julian dates?
I have read the dates in yyyymmdd format as follows; dates = 20230409 20230414 20230504 20230514 20230519 202306...
8 months ago | 2 answers | 0
2
answersQuestion
How to read first column containing names of shapefiles from data matrix?
I want to read excel csv file which is attached here using readmatrix matlab command. I want to use only readmatrix matlab comma...
8 months ago | 1 answer | 0
1
answerQuestion
How do I use matlab code on my data?
I have found a very useful matlab code as given below.
8 months ago | 0 answers | 0
0
answersQuestion
How to put conditions to find peaks in NDVI time series?
I am using following matlab code findpeaks(data,days'MinPeakProminence',60) xlabel('days’) ylabel('NDVI') title('Find Promi...
8 months ago | 1 answer | 0
1
answerQuestion
How to find peaks in NDVI time series data using matlab ?
peaks ; number of local maxima. The peaks in the NDVI time series are defined through their prominence and distance to other po...
8 months ago | 0 answers | 0
0
answersQuestion
How do I extract the specific values from NDVI time series?
I want to extract the following specific values from NDVI time series;POS value;MAX sum;AVG sum;SOS;POS;EOS The discription of a...
8 months ago | 0 answers | 0
0
answersQuestion
How do I extract the specific values from NDVI time serie?
I have generated ndvi input file time series over crop season(1 year period) and want to extract the following; POS value;MAX su...
8 months ago | 1 answer | 0
1
answerQuestion
How to make the figure as attached?
I want to make the same figure with little different dates using matlab. Figure is attached. Please suggest me how to make it.
8 months ago | 1 answer | 0
1
answerQuestion
How to define geographicGrid in matlab code?
I am using following matlab code to extract data but it is giving some error. img_file = 'c:\data\4MARCH24_BAND7_SUBSET.dat' i...
8 months ago | 1 answer | 0
1
answerQuestion
How to extract multispectral data using hypercube in matlab?
Now I am using hypercube function as follows img = hypercube(img_file.name); red = img(:,:,2); % red band rededg...
8 months ago | 1 answer | 0
1
answerQuestion
Why Unrecognized function or variable 'hypercube' occurred?
ds_indices_caf img_path = 'C:\Data\' 20240129_MAWANA_SUBSET.img Unrecognized function or variable 'hypercube'. Error in ds...
8 months ago | 1 answer | 0
1
answerQuestion
How to make a logical mask using a shape file?
I am using following MATLAB code to create logical mask. % Create a logical mask [Z,R] = readgeoraster(img_file.name); ...
8 months ago | 1 answer | 0
1
answerQuestion
How to read shape file in matlab?
I am using following matlab code to read shape file. I am attaching the shape file also as zip file. % pickup the shape files ...
8 months ago | 1 answer | 0
1
answer
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