pydiodon.plot_var_heatmap

pydiodon.plot_var_heatmap(V, varnames=None, cmap='ocean', title=None, x11=True, plotfile=None, fmt='png')

Plots a heatmap of the coordinates of the principal axis

Parameters

Va \(p \times p\) 2D numpy array

the coordinates of the principal axis in the basis of the variables

varnamesa list of strings

the names of the variables

(names of the columns of A on which PCA has been done)

cmapa string

the matplotlib colormap for drawing the heatmap

default value is viridis

titlestring

title of the plot

x11boolean

the plot is displayed on the scvreen if x11=True

plotfilestring

name of the file to save the plot

the plot is not saved if plotfile=None

fmtstring

format of the file to save the plot.

accepted values are png, eps, pdf.

Returns

a heatmap

Notes

Example

>>> import pydiodon as dio
>>> A, rn, cn = dio.load_dataset("diatoms_sweden")
>>> Y, L, V = dio.pca(A)
>>> dio.plot_var_heatmap(V, varnames=cn)

af, 22.10.28, revised 23.01.19