Question: Widening the distances between PCA vectors in PCA a biplot
gravatar for arronar
13 months ago by
arronar140 wrote:


I'm running a PCA analysis on R with 62 variables and when creating the biplot some vectors are getting on top of others and i cannot read their labels (see pic). Is there any way to make them more readable.

enter image description here

I used the factoextra package to plot it by running


Thank you.

vector pca piblot R bioplot • 542 views
ADD COMMENTlink modified 11 months ago by Alex Reynolds24k • written 13 months ago by arronar140

you could remove the black dot labels with fviz_pca_biplot(res.pca, label ="var") or you can simply get rid of black dots with fviz_pca_biplot(res.pca, invisible ="ind"). once you remove black dots, if you use xlim and ylim that only encircles your blue arrows. say your arrows are within the x axis range -3,2 while y axis range is 1,5 to -2 then do fviz_pca_biplot(res.pca, invisible ="ind") + xlim(-3,2) + ylim(-2,1.5) . I think this might widen the spaces.

ADD REPLYlink modified 13 months ago • written 13 months ago by firatuyulur190

Thank you very much. Seems that it works.

ADD REPLYlink written 13 months ago by arronar140
gravatar for Alex Reynolds
11 months ago by
Alex Reynolds24k
Seattle, WA USA
Alex Reynolds24k wrote:

In addition to using a smaller type size, you can render the plot to PDF, open with Adobe Illustrator, and add a stroke color of white and a thickness of 0.25pt. Adding a thin outline around text helps distinguish one label from another by keeping labels from blending into one another.

ADD COMMENTlink written 11 months ago by Alex Reynolds24k
Please log in to add an answer.


Use of this site constitutes acceptance of our User Agreement and Privacy Policy.
Powered by Biostar version 2.3.0
Traffic: 612 users visited in the last hour