I do not understand the behaviour of \xmlindex in the code below. The goal is to extract the contents of node <abc>-number 1. The strange things is that \xmltext returns the contents of both the <abc> nodes, but \xmlindex returns nothing. The returns of the \writestatus calls:
1>> ab-2 : :: 2>> ab-2 : :ABC-1ABC-2:
\startxmlsetups xml:testsetups \xmlsetsetup{test}{test|ab|abc}{xml:*} \stopxmlsetups \xmlregistersetup{xml:testsetups} \startxmlsetups xml:test \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:ab \writestatus{>>1>> \xmltag{#1}-\xmlcount{#1}{/abc}}{:\xmlindex{#1}{/ abc}{1}:} \writestatus{>>2>> \xmltag{#1}-\xmlcount{#1}{/abc}}{:\xmltext{#1}{/ abc}:} \stopxmlsetups \starttext \xmlprocessfile{test}{test.xml}{} \stoptext Input is: <test> <ab> <abc>ABC-1</abc> <abc>ABC-2</abc> </ab> </test> Hans van der Meer
Hi, Finally, after reading source code of math-ali.mkiv, I found the best way to typeset my multiline equation as follows \starttext \placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC\NC = w^2 \NC + u^2\NC \text{(by \in{Equation}[eq:2])} \cr \NC\NC + v^2 + r^2 \NR[eq:2] \NC\NC\NC + v^2 + r^2 \NR[eq:3] \NC\NC = v^2\NC + r^2 \NR[eq:4] \stopalign \stopformula \stoptext but I don't know what is going on here. Exactly, eq:2 and eq:3 has the same output but they can not be interchanged. Can someone explain this code? MO
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
Hi, Finally, after reading source code of math-ali.mkiv, I found the best way to typeset my multiline equation as follows
\starttext \placeformula
\startformula
\startalign[n=3]
This means that you must have three "columns" in each line
\NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1]
\NC\NC = w^2 \NC + u^2\NC \text{(by \in{Equation}[eq:2])} \cr
This has 4 columns. You do not get an error message because you use \cr instead of \NR. That also messes up the alignment of the next equation.
but I don't know what is going on here. Exactly, eq:2 and eq:3 has the same output but they can not be interchanged. Can someone explain this code?
This is how I would do this. \placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC \NC = w^2 + u^2 \NC \text{(by \in{Equation}[eq:2])} \NR \NC \NC \quad + v^2 + r^2 \NC \NR[eq:2] \NC \NC \quad + v^2 + r^2 \NC \NR[eq:3] \NC \NC = v^2 + r^2 \NC \NR[eq:4] \stopalign \stopformula Aditya
On 3/15/2010 2:21 AM, Aditya Mahajan wrote:
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
Hi, Finally, after reading source code of math-ali.mkiv, I found the best way to typeset my multiline equation as follows
\starttext \placeformula
\startformula
\startalign[n=3]
This means that you must have three "columns" in each line
\NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1]
\NC\NC = w^2 \NC + u^2\NC \text{(by \in{Equation}[eq:2])} \cr
This has 4 columns. You do not get an error message because you use \cr instead of \NR. That also messes up the alignment of the next equation.
but I don't know what is going on here. Exactly, eq:2 and eq:3 has the same output but they can not be interchanged. Can someone explain this code?
This is how I would do this.
\placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC \NC = w^2 + u^2 \NC \text{(by \in{Equation}[eq:2])} \NR \NC \NC \quad + v^2 + r^2 \NC \NR[eq:2] \NC \NC \quad + v^2 + r^2 \NC \NR[eq:3] \NC \NC = v^2 + r^2 \NC \NR[eq:4] \stopalign \stopformula
Aditya
Thanks, but your output is not the same as mine. The comment "by Equation 2" must be right aligned exactly where formula number is. Also I don't like manual alignment like \quad. AMS-TEX provide commands for automatic alignment. It would be nice if context supports that too.
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
On 3/15/2010 2:21 AM, Aditya Mahajan wrote:
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
Hi, Finally, after reading source code of math-ali.mkiv, I found the best way to typeset my multiline equation as follows
\starttext \placeformula
\startformula
\startalign[n=3]
This means that you must have three "columns" in each line
\NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1]
\NC\NC = w^2 \NC + u^2\NC \text{(by \in{Equation}[eq:2])} \cr
This has 4 columns. You do not get an error message because you use \cr instead of \NR. That also messes up the alignment of the next equation.
but I don't know what is going on here. Exactly, eq:2 and eq:3 has the same output but they can not be interchanged. Can someone explain this code?
This is how I would do this.
\placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC \NC = w^2 + u^2 \NC \text{(by \in{Equation}[eq:2])} \NR \NC \NC \quad + v^2 + r^2 \NC \NR[eq:2] \NC \NC \quad + v^2 + r^2 \NC \NR[eq:3] \NC \NC = v^2 + r^2 \NC \NR[eq:4] \stopalign \stopformula
Aditya
Thanks, but your output is not the same as mine. The comment "by Equation 2" must be right aligned exactly where formula number is.
ConTeXt does not support that directly, but you can fake it. \def\NRtag{&\global\let\doalignNC\dodoalignNC\doalignNRtag}% \def\doalignNRtag[#1]% {#1\crcr} \starttext \placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC \NC = w^2 \NC + u^2 \NRtag[\text{(by \in{Equation}[eq:2])}] \NC \NC \NC + v^2 + r^2 \NR[eq:2] \NC \NC \NC + v^2 + r^2 \NR[eq:3] \NC \NC = v^2 \NC + r^2 \NR[eq:4] \stopalign \stopformula \stoptext
Also I don't like manual alignment like \quad. AMS-TEX provide commands for automatic alignment. It would be nice if context supports that too.
ConTeXt does support that (see above); but aligning at the + sign makes sense only for specific types of equations. In general, using \quad is considered good typography. (Imagine what would happen if the first term in one of the equations was very big). Aditya
On 3/15/2010 8:10 PM, Aditya Mahajan wrote:
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
ConTeXt does not support that directly, but you can fake it.
\def\NRtag{&\global\let\doalignNC\dodoalignNC\doalignNRtag}%
\def\doalignNRtag[#1]% {#1\crcr}
\starttext \placeformula \startformula \startalign[n=3] \NC x^2 + y^2 \NC = z^2 \NC \NR[eq:1] \NC \NC = w^2 \NC + u^2 \NRtag[\text{(by \in{Equation}[eq:2])}] \NC \NC \NC + v^2 + r^2 \NR[eq:2] \NC \NC \NC + v^2 + r^2 \NR[eq:3] \NC \NC = v^2 \NC + r^2 \NR[eq:4] \stopalign \stopformula \stoptext
ConTeXt does support that (see above); but aligning at the + sign makes sense only for specific types of equations. In general, using \quad is considered good typography. (Imagine what would happen if the first term in one of the equations was very big).
Aditya
Thank you. It is perfect now. I think this solution deserve appearing in your MyWay manual. In fact, it deserves to be supported directly in MKIV. Mehdi
On Mon, 15 Mar 2010, Mehdi Omidali wrote:
Thank you. It is perfect now. I think this solution deserve appearing in your MyWay manual. In fact, it deserves to be supported directly in MKIV.
I'll add it to the MyWay. MkIV will support it when we eventually get down to an overhaul of display math. Aditya
participants (3)
-
Aditya Mahajan -
Hans van der Meer -
Mehdi Omidali