Bugs item #3362236, was opened at 2011-07-10 14:56
Message generated for change (Tracker Item Submitted) made by airwin
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Alan W. Irwin (airwin)
Assigned to: Werner Smekal (smekal)
Summary: pdf.c has overall vertical offset issue
Initial Comment:
This overall (i.e., including all parts of the string including the part that
is not superscripted or subscripted) vertical issue only occurs if "#u"
(superscript command) appears anywhere in the string. It does not occur if
"#d" (subscript command) occurs in the string without a "#u". So as a simple
example of the issue (second page of test_superscript_subscript.py) if you
generate the following three PLplot commands:
plmtex("t", -5.125, 0.1, 0.5, "X")
plmtex("t", -5.125, 0.2, 0.5, "X#d")
plmtex("t", -5.125, 0.3, 0.5, "X#u")
the third "X" is rendered lower than the other two. This result does not make
any sense from the code perspective since there is no reason the #u should
affect the position of the "X" behind it., and the #d and #u logic has
essentially no differences except for the size and magnitude of the offset for
_subsequent_ text. So possibly this puzzling result could be due to bad
scaling (see previous pdf.c bug report).
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