[R] large data set (matrix) using image()

the dendogram, I can't successfully add any axis. If anyone knows heatmap() well and would like to help via this function, it would work also. Cheers!Karen Liu [[alternative HTML version deleted]] __ R-help@r

[R] nls for piecewise linear regression not converging to least square

Hi R experts, I'm trying to use nls() for a piecewise linear regression with the first slope constrained to 0. There are 10 data points and when it does converge the second slope is almost always over estimated for some reason. I have many sets of these 10-point datasets that I need to do.

[R] nls minimum factor error

Hi, I have a small dataset that I'm fitting a segmented regression using nls on. I get a step below minimum factor error, which I presume is because residual sum of square is still not small enough when steps in the parameter space is already below specified/default value. However, when I

[R] adjusting plot vs font size in a plot

Hello: I am using plot() in rpart, making a decision tree plot. I use plot() first, then text() followed, but I think due to the figure vs. text size, the bottom of the text always gets cut off. I can only see the text of the bottom of the tree if I make the font size REALLY small. I