Hi all, I have been playing around a bit with the new ConTeXt Minimals and especially Cambria Math. I couldn't figure out, however, why the integral operator always comes out at about half the size of \sum or \prod. I couldn't find any relevant threads on the mailing list, but surely this is not the way it's supposed to be? Is there some list on the web showing what parts of math have been implemented, what still needs to be done (and, where someone with limited TeX knowledge could provide some assistance)? Best regards, Sebastian Attachments: minimal example (tex + pdf)
Sebastian Sturm wrote:
Hi all,
I have been playing around a bit with the new ConTeXt Minimals and especially Cambria Math. I couldn't figure out, however, why the integral operator always comes out at about half the size of \sum or \prod. I couldn't find any relevant threads on the mailing list, but surely this is not the way it's supposed to be?
No, that is clearly not right. I will investigate and report back. On the \widehat: it scales as far as the font allows it to. If that is not wide enough, I guess you could send a bug report to Microsoft.
Is there some list on the web showing what parts of math have been implemented, what still needs to be done (and, where someone with limited TeX knowledge could provide some assistance)?
No, not on the web. But there are only a few known MATH issues in the core/mkiv that I know of: * Latin Modern Math (and other old math font) virtual definitions are far from perfect (but that should not affect you, as you are using CambriaMath). * There is no support for skewed (text-style, with a diagonal bar, like in the frac feature) fractions yet in luatex. * The traditional TeX commands \atopwithdelims, \overwithdelims, and \abovewithdelims do not work properly because there is no matching MATH parameter at all. The real problem though, is that we do not have massive math tests: neither Hans nor me do any math typesetting in daily practise. Best wishes, Taco
Taco Hoekwater wrote:
Sebastian Sturm wrote:
Hi all,
I have been playing around a bit with the new ConTeXt Minimals and especially Cambria Math. I couldn't figure out, however, why the integral operator always comes out at about half the size of \sum or \prod. I couldn't find any relevant threads on the mailing list, but surely this is not the way it's supposed to be?
No, that is clearly not right. I will investigate and report back.
This looks like another font bug, but it is one that maybe needs patching in the mkiv core. The font defines DisplayOperatorMinHeight to be 2500 units. The smallest integral that satifies that specification has a total height of 2768 units (at 12pt fontsize, that is 16.3pt), the smallest matching summation has a total height of 4056 units (22.9pt). That is indeed way bigger, but the context output matches the MATH table specification. But to prevent ugly output, it may be better to force the DisplayOperatorMinHeight to 2800 (the next integral is 4405 units). Hans, Aditya, WDYT? Best wishes, Taco
Dear Taco, On Thu, 15 Oct 2009, Taco Hoekwater wrote:
I have been playing around a bit with the new ConTeXt Minimals and especially Cambria Math. I couldn't figure out, however, why the integral operator always comes out at about half the size of \sum or \prod. No, that is clearly not right. I will investigate and report back.
This looks like another font bug, but it is one that maybe needs patching in the mkiv core. Hans, Aditya, WDYT?
While you are at it, may you take a second look at the integral limits placement, as it was already reported in http://www.mail-archive.com/ntg-context@ntg.nl/msg39749.html Sincerely, Michail
Michail Vidiassov wrote:
While you are at it, may you take a second look at the integral limits placement, as it was already reported in
I did a trick in commit #3066 just now: the C function var_delimiter() (which is used for large operators as well as actual delimiters) now ignores italic corrections for 'new math' fonts. It certainly helps, the placement is now much better. Best wishes, Taco
participants (3)
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Michail Vidiassov -
Sebastian Sturm -
Taco Hoekwater