Suggestion

Markiyan Hirnyk — Sun, 05 Feb 2012 12:37:48 Z

The usage of the tickmarks option helps. Compare

> with(plots):
> logplot(exp(-x), x = .1 .. 10, tickmarks = [default, spacing(10^(-20))]);

with the output of

Possible way

Kitonum — Sun, 05 Feb 2012 13:00:06 Z

Unfortunately, I haven't found a way for keeping such a format. So everything had to be done by hand. If you need this often, you can write the procedure.

See an example:

Download mod=log.mw

can this be done more using Maple options?

PatrickT — Sun, 05 Feb 2012 23:13:47 Z

I wanted to show how to add gridlines, but discovered I didn't know how to get a pretty output. Compare my two attempts.

Here, using Maple's options, I wasn't able to select the values of spacing() to get the plot to look good. Like Markiyan's plot above, I find the y-axis too cluttered. Perhaps Markiyan you know how to control that? [is there any difference between using logplot and plot with option mode=log ?]

plot( exp(-x)
, x = .1 .. 10
, 'axis[2]' = [ 'mode' = log, 'gridlines' = [ 5, 'color' = blue, 'subticks' = true ] ]
, 'tickmarks' = [ default, spacing(10^(-3),10^(-1)) ]
, 'labels' = [ "x", "y (log scale)" ]
) ;

Here, forcing some choices on Maple:

plot( exp(-x)
, x = .1 .. 10
, 'axis[2]' = [ 'mode' = log, 'gridlines' = [ 5, 'color' = blue, 'subticks' = true ] ]
, 'tickmarks' = [ default, [1 = 1, seq(10^(-i) = 10^(convert(-i,symbol)), i = 1 .. 5, 1 ), 0 = 0] ]
, 'view' = [default, 0 .. 1.3]
, 'labels' = [ "x", "y (log scale)" ]
) ;

MaplePrimes - answers and comments on Question, How could I always get the 10^(-n) y-axis numeric mark with logplot?

Suggestion

Possible way

can this be done more using Maple options?