Sensor zenith angle value of Landsat 8 data?

To apply MCSST algorithm for retrieving sea surface temperature data from Landsat 8 I need a 'sensor zenith angle' value. Unfortunately in the Landsat 8 metadata file (.MTL) only available sun...

01 February 2017 3,115 4 View

Are Himawari 8 images distributed freely?

01 February 2016 1,621 2 View

How can I measure eddy from SAR?

I'a still newbie in SAR processing Does anybody have experience to measure the eddy (size, evolution, ect) using SAR data? I have several SAR image data, may be samoboday want to share...

31 December 2014 8,966 5 View

How do I read and plot .nc data in R?

Could somebody help me to figure out my data I have .nc data around Indonesia water (attached below) I use R to open and plot it. This is my syntax nc

11 December 2014 6,993 5 View

How to create Georeference from .tif file in R?

I work with R to analyse satellite data from MODIS (file attached). I want to georefences my .image/.tif file using R. This is my script that I used: library (raster) x

10 November 2014 5,032 6 View

How to use predict (raster package) with gam?

10 November 2014 8,364 2 View

How can I find and download subsurface variable (SST, Salinity, Biogeocemhistry, etc.)?

.

04 May 2014 1,250 2 View

Is it possible to create Hovmoller diagram by using MATLAB?

Thanks.

02 March 2014 2,880 4 View

Can anyone help with subsurface variables?

I want to analyze the interaction between fish abundance with environment variables. Does anyone have experience using subsurface data (sst, salinity, etc)? Where can I download this kind of data?

02 March 2014 2,864 8 View

Where we can download global sea surface salinity from satellite data freely?

Sea surface salinity data.

01 February 2014 765 14 View

I have done flood mapping using sentinel 1 image but for validation i am unable to find any dataset...what dataset should i download...??

I have done flood mapping using SAR but for validation i am finding difficulty in getting a data set...i opted for LANDSAT image but there i am facing difficulty in cloud coverage as coverage is...

16 February 2021 4,620 3 View

What is/are the best ML classifier(s) for Sentinel2 images?

Hi I am trying to segment a sentinel2 image. At this stage, I want to run a binary classifier that assigns each pixel to either farm or non-farm pixel. For this purpose, I have 4 10m bands...

15 February 2021 3,596 9 View

How to choose the Hidden Layers Number and RBM Size in a DBN network?

Hello, When using a Deep Belief network (DBN) for images classification, how could we choose the number of hidden layers (number of Restricted Boltzmann Machines) and nodes (RBM size) in a hidden...

09 February 2021 4,618 5 View

Is there any similarity index between two time series?

Hi We have two time series dataset. For example mean daily temperature from two stations. Each of them have 30 data for a month. T1={ t1 , t2 ,... , t30 } T2={ t1 , t2 ,... , t30 } Now we want to...

06 February 2021 6,434 7 View

Which satellite image gives best results for Land Use land cover classification(specifically for built up regions) for Indian region ?

Landsat, sentinel and USGS satellite images have varying accuracy for identification of urban built up dynamics ? Which one is best suited for India

04 February 2021 8,632 8 View

Matrix based scientific data analysis: extrapolating to matrices of sets?

Data sets, when structured, can be put in vector form (v(1)...v(n)), adding time dependency it's v(i, t) for i=1...n and t=1...T. Then we have a matrix of terms v(i, j)... Matrices are important,...

30 January 2021 9,295 6 View

When is the right time to stop training a classification algorithm?

In this example giving 400 samples looks like there is an accuracy of 91.5% while training beyond that point, accuracy is getting decreased. Are 400 samples enough to keep for this example? If...

27 January 2021 5,657 3 View

How can I make unsupervised clustering of trees species using algorithms like HAC, Kmeans... in R?

I am working on the development of multi-species volume allometric equation from diameter (DBH). I would like to form groups of species with the largest possible volume-diameter correlations by...

19 January 2021 5,752 5 View

In which case meta-heuristics algorithms cannot minimize the network error?

Hello, I am working on hybrid neural network. I have combined ANN with two different evolutionnary algorithms to build a prediction model of 6 inputs and one output with one hidden layer of 7...

18 January 2021 7,144 3 View

Is it okay to have EVI2 values above 1.25, calculated using Landat 7 surface reflectance?

I have calculated EVI2 using landsat 7 surface reflectance images and I am getting values above 1.25 (mathematical maximum for EVI2 based on the formula) in my study area (heavily vegetated). I...

13 January 2021 8,428 3 View