CODEWITHSUNDEEP
spatstat
Garry
Garry

Reputation: 189

Spatstat What is the scale used on the colour bar when plotting a point pattern?

I am plotting a spatial point pattern of about 11000 points, in a rectangular area with limits c(0,100), c(0,70).

I wanted to check the interpretation of the scale on the color bar. The color bar scale runs from 0 to about four. Do these numbers represent points per unit area, where the total area = 100 x 70?

Upvotes: 1

Views: 198

Answers (1)

Ege Rubak
Ege Rubak

Reputation: 4507

When you plot a point pattern of class ppp using plot() (dispatching to plot.ppp()) no color bar is produced. Please explain what you are doing with a reproducible example. Just use a built-in dataset like cells to illustrate the problem/question. Maybe you are plotting an estimate of the point intensity/density obtained by density() (dispatching to density.ppp())? By default the result from running density.ppp() is a raster/image of class im and in this case the color bar produced by plot.im() indeed represents number of points per unit area.

Upvotes: 1

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