How do you change a database from long to wide in R when you have a lot of variable (800 or +)?

21 March 2022 0 5K Report

I have 800 variables and more, and I do not write them all in the syntax, but those are the methods I have found. I fear it will make R crash if I do it in this way.

Badges
Science topic

Similar topics
Psychology

More Nabil Bouizegarene's questions See All

Can I use sonicator only to lyse the exosomes and measure their protein contents using BCA assay kit?

Hello, I want to ask regarding exosome protein quantification method. Is it necessary to lyse exosomes before measuring their protein contents using BCA assay kit? Or can I just straight away...

23 July 2024 4,603 4 View

I need a digital Transformation validated measurement scale ?

Thanks for support

25 June 2024 4,475 0 View

Trying to make optimization for Mixer on different pdk ?

i make a design topology of mixer For my graduation project working at 28 Ghz on cadence with UMC pdk and get this result S(2,1) 3.5db but when trying to make same topology with another pdk on...

09 June 2024 9,729 3 View

Could you email me this paper below?

I'm interested in this paper : A Data Dissemination Algorithm Based On Maximization of Causal Path Entropy in Vehicular Ad Hoc Networks Could you email me this paper?

19 April 2024 2,940 0 View

Why my unstained, isotype (IgG) and positive samples (U87 cells) have same histogram results?

Hi, I just want to ask regarding flow cytometry method for indirect staining of U87 cells (Glioblastoma) as I'm still quite new in using this method. My objective is to observe the expression of...

23 March 2024 8,883 1 View

How can i complete clustering analysis and FEL analysis using gromacs ?

GROMACS version: 21.0 GROMACS modification: No I complete a 100 ns MD using gromacs v21.0 Can you please provide me a step by step command lines to complete clustering analysis and Free energy...

03 March 2024 2,482 1 View

How to justify selecting a model with higher BIC score?

we know AIC and BIC could be used to compare statistical models. But how to justify selecting a model with higher AIC or BIC values if they fit the model better than the ones with lower values? If...

14 February 2024 3,529 0 View

How to estimate marginal effects using Rchoice package in R?

I could not find any function in Rchoice that calculates average marginal effects (AME) of the significant variables on the binary outcome for random parameters logit model, only found for...

13 December 2023 266 1 View

How i can address this reviewer feedback in my article?

i submitted my article in where i conducted molecular dynamic simulation 100 ns for a complex protein-ligand. Reviewer asked us for more work to be done for this study as below ''More extensive...

13 November 2023 4,581 1 View

How can I use wien2k DFT - 1/2??

i cant applied the indicator from the usr guide

01 October 2023 2,029 2 View

How to report results of Generalised Linear Mixed Models in a journal article?

Hi everyone, If you have written or come across any papers where Generalised Linear Mixed Models are used to examine intervention (e.g., in mental health) efficacy, could you please share the...

04 August 2024 4,130 4 View

The question is how to use Wavenet transform?

HOW CAN I WRITE A CODE TO USE THE WAVENET TRANSFORM AS A FEATURE EXTRACTION METHOD INSTEAD OF DWT IN MATLAB?

03 August 2024 7,829 0 View

PhD thesis topic?

I want to write a topic for my PhD thesis in hospitality (hotels), can u please suggest some variables

29 July 2024 9,058 3 View

What are the main types of errors and causes that English major college students commit in their English writing?

a 15-page paper

29 July 2024 1,956 5 View

I did hirshfeld surface analysis for molecule but did not find red spot and interaction surface in energy frame work, is it ok for research article ?

In hirshfeld surface calculation i did not find any red spot in hirshfeld surface, is it ok for research article to write?

28 July 2024 2,988 0 View

How can I find writers for drafting, submitting, and publishing papers?

Looking for paper collaboration writers： Collaboration Model 1: 1.1 Based on the chosen topic, complete the paper writing, select an SCI or SSCI Q1 journal, submit using my QRCID, and complete...

27 July 2024 8,965 1 View

Given currenct advances in the AI and Smart Computation, what are the prospects of having truly Humanoid Computing Devices in support of Education?

Today, many priorities for improvements to teaching and learning are unmet. Educators seek technology-enhanced approaches addressing these priorities that would be safe, effective, and scalable....

26 July 2024 8,544 4 View

What are cultural bereavement practices of Jamaica that do not conflict with the Christian faith?

I am writing my thesis on the enculturation of Jamaican grief and bereavement practices that enhances their Christian faith and not diminish it.

23 July 2024 3,837 0 View

What are the key risks associated with foodborne pathogens in imported leafy greens, the impact on public health and effect on regulatory framework?

I am currently writing a systematic review

15 July 2024 9,176 1 View

How to start writing an anti-virus software ?

I read several information security books. How do I start writing anti-virus softwares ？

13 July 2024 8,180 1 View