Nice and very useful, but appears to not do log scales as I believe
the OP wants. I hacked a simple Excel spreadsheet that would do fine,
except for the fact that Excel plots INCORRECT size segments
sometimes! Grrrr. Otherwise seems like it would be fine; it prints
just fine, to whatever your printer resolution is.

If the OP wants to try it in Excel perhaps a different way than he
first tried, here's what I did...
o One cell for degrees span, referenced in
next-to-last step.
o Make a column with the values where you want tics
(e.g., 1, 2, 4, 6, 8, 10, 20, 40, 60, 80, 100).
There can be any number of them, at any values
(in sequence, of course).
o Next column over, take the log of the tic values
o Next column over, take the differences between
adjacent values in previous (log) column.
There will be n-1 of them.
o Just below last cell of differences column, create
a cell with
sum(column_above)*(360-degrees_span)/degrees_span
in it.
o Create a "donut" plot of the n values in the last
column. Adjust the colors to be all the same (or
not, as you please) and the inner circle to be
the radius you want. This doesn't label the tics,
but you should be able to do that in other progs
if you want. And the tics are all the same
length, which is suboptimal.

Should be easy to do in Scilab, too, and use Ghostscript to print
(like Panel and Dial do). That gives the ability to make different
size tics and to label them.

Cheers,
Tom



"xpyttl" wrote in message ...
go to:
http://hfradio.org/wb8rcr

On the lower left is a link to "Panel (not QSLmaker)"

..

"SpamLover" wrote in message
om...
I have a few slow-motion drives with pointers that I'd like to equip
with simple log scales. I have tried to split a half-circle scale by
means of a compass, and found it to be quite doable, but 1)
time-consuming, 2) messy, 2) leading to power-of-two end-of scale
values (obviously) that are anything but intuitive. I am not an
binary / octal / hex / kind of guy, and have no affinity for scales
that end at 64 or 128 or G_d forbid 256. I also tried making a 0-100
scale by means of Excel / PowerPoint / Openoffice, but their rendering
hits very soon an unsightly rough degree of approximation.

Is there any place on the web whence I can download some
high-definition graph for a 0-100 or 0-180 scale? I'd print it out in
large format and then reduce it to the size I need by means of an
ANALOG photocopier.

TIA

Spammy