plot.extendedPHT inaccessible and not working

[mattbivi]

Hi James,

I just had a shot at running your code in R and I'm hitting a small stumbling block - I can't get your plot.extendedPHT working.

It isn't accessible directly after installation, which I managed to work around by importing it as a function, and then it doesn't get past line 51, citing incorrect number of dimensions.

I gave it a shot trying to sort it out it myself, but I'm not so familiar with R.

The rest has worked without much of a hitch, except that I put in a big image (~4000x2000) and I gave up waiting after 30 mins, but after some resizing it worked a treat.

Many thanks for the hard work,
Matt

[robinsv]

Hi Matt, I'm a complete R programming novice, but helped develop the ideas behind the package. I found that following steps described in "doc/getting-started.Rmd" in particular a command such as

plot(xphtA[[1]], main = "Extended Persistence of A\nin Direction pi/4")
legend("bottomright", legend=c("Ord0", "Rel1", "Ess0", "Ess1"), col = getDefaultColours(), pch = 15:18)

generated the extended persistence diagram while the following gives a barcode.

plot(xphtA[[1]], barcode = TRUE, main = "Extended Persistence Barcode of A\nin Direction pi/4")
legend("topright", inset=c(-0.3,0), legend=c("Ord0", "Rel1", "Ess0", "Ess1"), lty = c(1,1,1,1), col = getDef

Hope that helps!

Vanessa