What is the better way to handle zeros for bias correcting the satellite based precipitation?

I am using gamma distribution for correcting bias in satellite based precipitation. Can you suggest me to handle zero values ?

31 December 2017 4,533 1 View

Anyone working with APHRODITE data in R?

I was trying to read APHRODITE data in R software but could not. Any solution?

10 November 2017 7,325 3 View

How to select a row based on minimum value on two columns?

I have a matrix with x rows and 2 columns. I want to select the row which has minimum value in both columns. But the problem is minimum value does not occur at the same time in a row. Is there any...

09 October 2017 7,094 0 View

How to read MSWEP rainfall data from R?

I am planning to use MSWEP rainfall data for some hydrological application. I decide to use R as i am familiar with it. Can anyone know how to read MSWEP rainfall data from R? I already tried with...

09 October 2017 1,170 3 View

How to install MODISSnow library in R (window operating system)?

I was unable to install MODISSnow library in window platform. Can anyone help me?

05 June 2017 9,221 0 View

Any paper that considers snow interception by plant for Himalayan catchment?

how important is snow interception by plant for central Himalayas. Any reference articles.

05 June 2017 8,783 2 View

Any R package for Vulnerability mapping?

05 June 2017 4,681 0 View

How to calculate mean snow cover days?

I have raster file of snow cover days. Now i want to calculate mean snow cover days for whole raster. How to do this. Should i add values of all pixel and divide by those pixels which have snow ?

04 May 2017 6,517 2 View

What are the suitable statistical index for evaluation of gridded satellite rainfall products?

Could you explain which statistical index is better for evaluation of satellite rainfall product for Himalayan catchment?

01 February 2017 6,627 4 View

What are existing spatial downscaling techniques for increasing spatial resolution of grided climate datasets like APHRODITE, TRMM, CHIRP, MERRA?

I need to improve/increase the spatial resolution of gridded climate datasets from low to high (eg., 5 km to 90 m) for Himalayan Catchment. Can you suggest some?

31 December 2016 4,168 6 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

How can I make stacked bar graph with scatter plot?

I want to make a stacked bar graph with showing each data value as dots. I tried with graph pad prism, version 6, but could not succeed. Does anyone have tried before making such graphs?

01 March 2021 9,383 1 View

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

How can I set up a good fit SEM model in AMOS?

I am trying to make an SEM model in AMOS for my dissertation but having some trouble with getting a good fit. I am looking for relationships between self-efficacy reported on a Likert scale and...

26 February 2021 8,642 4 View

How could I process data in RCT to include it in meta-analysis?

I'm in the process of doing a meta-analysis and have encountered some problems with the RCT data. One of my outcom is muscle strength. In one study, I have three different measurements of muscle...

25 February 2021 7,603 3 View

How do I choose contrasts in SPM8?

I am learning how to use SPM for PET and PET-MR analysis, but I haven't found any great resources that explain how contrasts work. I have a series of PET images where our hypothesis argues that...

24 February 2021 1,534 2 View

Am i able to conduct a factor analysis on each of my subscales, as opposed to the whole scale?

My psychometric scale contains 38 items in total, with 4 subscales (20, 6, 6 & 6 items respectively? Can i run a factor analysis for each subscale rather than the scale as a whole for the...

24 February 2021 8,856 8 View