Visualization of correlation matrix in R | ggcorrplot tutorial | ggplot2 extension | R Tutorial

In this video, we will take a quick look at the 'ggcorrplot' package and see how to use it and visualize a correlation matrix.
mtcars dataset used for demonstration purpose.
Items covered :
- Visualize correlation matrix (square and circle methods)
- hc-order method
- formatting correlation coefficient labels on the plot (changing color and size)
- Adding ggplot themes
- changing legend colors
- Layout types - lower & upper
- Reflecting & dropping insignificant coefficients basis comparision of p-values and significance levels
Link to the github gist :
gist.github.com/aagarw30/208e...

[@Pilotamericano]

array mere pyaare bhartiya nagrik

[@jrichalot]

Super useful and clear. Many thanks

[@jamalwadimd]

Thank you, very clear and informative.

[@rodrigogomezlopez3668]

Excellent explanation!

[@abhinavagrawal6317]

Thanks for commenting!

[@codedspectra5988]

Thanks this helped me a lot with my assignment

[@abhinavagrawal6317]

Glad it helped! Share with others so they can benefit. Happy learning!

[@md.masumbillah8222]

well explanation, thanks for uploading

[@abhinavagrawal6317]

You are welcome!

[@cyrinerobbana1691]

Thank you for the nice presentation, I would like to put p values as Asterix in the correlogram instead of crosses or white ?

[@preciouschigamba1742]

Helpful

[@WhySoBroke]

Most excellent tutorial! Can you show please how to create a Geom Smooth plot with double (supplementary) Y axis? Also, non linear regression would be great! Thanks in advance amigo!! ❤️🇲🇽❤️

[@abhinavagrawal6317]

Claro que si, muchas gracias para commentario senor! Salud de la India.

[@aks1008]

for correlation plot are all variables required to be numeric..

[@cetanone]

Thanks for the explanation! I don't understand what is the meaning of the size of the circle? Do they have the same meaning as the color scale? Because I see very small red circle which would mean that the size and the colors are not matching.

[@EarthPlanet356]

Red shows negative correlation and dark blue positive correlation. The intensity of color and the size shows the strength of correlation.

[@ArpithaAnbuDeborahY]

Is it possible to change to spearman correlation?

[@teestanaskar734]

how can we combine two plots in a single ? suppose I have correlation matrix for cases and controls , now I want to make a single plot showing its upper part for cases and lower for controls or vice versa

[@abhinavagrawal6317]

I am sorry. Didn’t get the question. Could you pls elaborate so I can try helping? Ty Abi

[@teestanaskar734]

Thanks so much for reply and this amazing tutorial@@abhinavagrawal6317 . I am trying to explain the question; I have a cohort of case and a cohort of control with their gene expression data. Now, I want to make correlation matrix for a set of gene for cases and same for the controls for the same set of genes. Now I want to plot them under same x and y axis in one plot of which the upper part of the plot would be for cases and the lower part would be for controls. Thanks