How to create a documentTermMatrix from a Corpus?

Im splitting my text and creating a corpus: > newdata Corpus = Corpus(VectorSource(newdata)) Corpus contains all the characters that...

03 April 2018 486 0 View

How to solve error Error in G[i, ] : subscript out of bounds when using Drivernet R ?

Im importing a 412 x 31 matrix: dat

03 April 2018 1,400 0 View

How to create a DocumentTerm matrix?

I'm trying to feed a corpus into a DocumentTermMatrix (dtm) to analyze, but I noticed that dtm doesn't keep all terms (for example, I have terms with parenthesis and semicolons that I would like...

10 November 2017 4,014 1 View

R package that analyzes cyto SNP 850K data?

What R package is available to analyze data from an Illumina cyto SNP 850K dataset?

07 August 2016 9,207 0 View

What is the best way to create a matrix from the most frequent terms (say 50) in a DocumentTermMatrix?

04 May 2016 9,771 2 View

R package best to analyze driving mutations?

What packages are suited to explore driving mutations?

04 May 2016 5,217 0 View

Any suggestions on what kind of material can absorb or reflect a 9.2 GhZ radar frequency?

material that can absorb or reflect up to this frequency.

31 December 2015 1,855 3 View

Does anyone know what version of R to run with EBImage package? Are there any other image packages in R?

Any other image processing and analysis package that one may use in R.

31 December 2015 3,382 6 View

How can I scale a matrix of 25 columns in R?

08 September 2015 4,596 2 View

Would you use R or python for machine learning?

Any suggestions

08 September 2015 9,750 0 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 normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 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 to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 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