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<H3><A NAME="SECTION00361100000000000000">
1.6.1.1 Options for log<IMG
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ALT="$_{10}$"> axes</A>
</H3>
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<OL>
<LI><I>tick</I> must be 1, 2, or 3. Annotations/ticks will
then occur at 1, 1-2-5, or 1,2,3,4,...,9, respectively.
<P>
</LI>
<LI>Append <B>l</B> to <I>tick</I>. Then, log<IMG
WIDTH="17" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$_{10}$"> of the annotation
is plotted at every integer log<IMG
WIDTH="17" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$_{10}$"> value.
<P>
</LI>
<LI>Append <B>p</B> to <I>tick</I>. Then, annotations appear as 10
raised to log<IMG
WIDTH="17" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$_{10}$"> of the value (e.g., <IMG
WIDTH="36" HEIGHT="35" ALIGN="MIDDLE" BORDER="0"
SRC="img16.gif"
ALT="$10^{-5}$">).
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<CAPTION ALIGN="BOTTOM"><STRONG>Figure 1.7:</STRONG>
Logarithmic projection axis using separate values for anotation,
frame, and grid intervals. (top) Here, we have chosen to anotate the actual
values. Interval = 1 means every whole power of 10, 2 means 1, 2, 5 times
powers of 10, and 3 means every 0.1 times powers of 10. We used
<B>-R</B>1/1000/0/1 <B>-JX</B>3l/0.4 <B>-Ba</B>1<B>f</B>2<B>g</B>3.
(middle) Here, we have chosen to
anotate log<IMG
WIDTH="17" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$_{10}$"> of the actual values, with <B>-Ba</B>1<B>f</B>2<B>g</B>3<B>l</B>.
(bottom) We anotate every power of 10 using log<IMG
WIDTH="17" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img3.gif"
ALT="$_{10}$"> of the actual values
as exponents, with <B>-Ba</B>1<B>f</B>2<B>g</B>3<B>p</B>.</CAPTION>
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<ADDRESS>
Paul Wessel
2001-04-18
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