when i take notes, i like to write in "ascii math".
e.g. definition of continuous
all eps > 0, exist del > 0 . |f(x)-f(y)| < eps . |x-y| < del
i would like this to automatically inline unicode, as i type
Ɐ ε > 0, ∃ δ > 0 . |f(x)-f(y)| < ε . |x-y| < δ
1) does this exist, in a minor mode and independent of any latex major mode?
2) how do i substitute "tokens" in emacs. e.g. the regex "\W+all\W+" => "Ɐ" (since writing " all " is easier than "\forall")?
Related
My current script copies text like this with a shortcut:
:WiltedFlower: aetheryxflower ─ 4
:Alcohol: alcohol ─ 3,709
:Ant: ant ─ 11,924
:Apple: apple ─ 15
:ArmpitHair: armpithair ─ 2
and pastes it modified into a single line
Pls trade 4 aetheryxflower 3 alcohol 11 ant 15 apple 2 armpithair <#id>
As you can see there are already two little problems, the first one is that it copies only the number/s before a comma if one existed instead of ignoring it. The second is that I always need to also copy before hitting the hotkey and start re/start the script, I've thought of modifying the script so that it uses the already selected text instead of the copied one so that I can bind it with a single hotkey.
That is my current script, it would be cool if anyone can also tell me what they used and why exactly, so that I also get better with ahk
!q::
list =
While pos := RegExMatch(Clipboard, "(\w*) ─ (\d*)", m, pos ? pos + StrLen(m) : 1)
list .= m2 " " m1 " "
Clipboard := "", Clipboard := "Pls trade " list " <#951737931159187457>"
ClipWait, 0
If ErrorLevel
MsgBox, 48, Error, An error occurred while waiting for the clipboard.
return
If the pattern of your copied text dont change, you can use something like this:
#Persistent
OnClipboardChange:
list =
a := StrSplit(StrReplace(Clipboard, "`r"), "`n")
Loop,% a.Count() {
b := StrSplit( a[A_Index], ": " )
c := StrSplit( b[2], " - " )
list .= Trim( c[2] ) " " Trim( c[1] ) " "
}
Clipboard := "Pls trade " list " <#951737931159187457>"]
ToolTip % Clipboard ; just for debug
return
With your example text, the output will be:
Pls trade aetheryxflower ─ 4 alcohol ─ 3,709 ant ─ 11,924 apple ─ 15 armpithair ─ 2 <#951737931159187457>
And this will run EVERY TIME your clipboard changes, to avoid this, you can add at the top of the script #IfWinActive, WinTitle or #IfWinExist, WinTitle depending of your need.
The answer given would solve the problem, assuming that it never changes pattern as Diesson mentions.
I did the explanation of the code you provided with comments in the code below:
!q::
list = ; initalize a blank variable
; regexMatch(Haystack, regexNeedle, OutputVar, startPos)
; just for frame of reference in explanation of regexMatch
While ; loop while 'pos' <> 0
pos := RegExMatch(Clipboard ; Haystack is the string to be searched,
in this case the Clipboard
, "(\w*) ─ (\d*)" ; regex needle in this case "capture word characters
(a-z OR A-Z OR 0-9 OR _) any number of times, space dash space
then capture any number of digits (0-9)"
, m ; output var array base name, ie first capture will be in m1
second m2 and so on.
, pos ? pos + StrLen(m) : 1) ; starting position for search
"? :"used in this way is called a ternary operator, what is saying
is "if pos<>0 then length of string+pos is start position, otherwise
start at 1". Based on the docs, this shouldn't actually work well
since 'm' in this case should be left blank
list .= m2 " " m1 " " ; append the results to the 'list' variable
followed with a space
Clipboard := "" ; clear the clipboard.
Clipboard := "Pls trade " list " <#951737931159187457>"
ClipWait, 0 ; wait zero seconds for the clipboard to change
If ErrorLevel ; if waiting zero seconds for the clipboard to change
doesn't work, give error msg to user.
MsgBox, 48, Error, An error occurred while waiting for the clipboard.
return
Frankly this code is what I would call quick and dirty, and seems unlikely to work well all the time.
Im using this code in the autohotkey converter because I would like to press for example:
'ctrl + alt + r' to change the font color
SetTitleMatchMode, RegEx ; match window titles by regular expressions
#IfWinActive - OneNote$ ; ------ only in windows with title ending with "- OneNote"
^!p::Send, !hfca!hfc{Down 7}{Right 4}{Enter}
^!r::Send, !hfcm^{PgDn}!r255{Tab}5{Tab}0{Enter} ; red (255, 0, 0)
^!b::Send, !hfcm^{PgDn}!r0{Tab}5{Tab}255{Enter} ; blue (0, 0, 255)
^!a::Send, !hfca ; automatic color (i.e. reset font color to "none")
#IfWinActive ; ------ end of section restricted to specific windows
I executed this code trough the .exe file but nothing happened
I have an application that creates very nice data plots rendered in PostScript with letter size and landscape mode. An example of the input file is at http://febo.com/uploads/blip.ps. [ Note: this image renders properly in a viewer, but the PNG conversion comes out with the image sideways. ] I need to convert these PostScript files into PNG images that are scaled down and rotated 90 degrees for web presentation.
I want to do this with ghostscript and no other external tool, because the conversion program will be used on both Windows and Linux systems and gs seems to be a common denominator. (I'm creating a perl script with a "PS2png" function that will call gs, but I don't think that's relevant to the question.)
I've searched the web and spent a couple of days trying to modify examples I've found, but nothing I have tried does the combination of (a) rotate, (b) resize, (c) maintain the aspect ratio and (d) avoid clipping.
I did find an example that injects a "scale" command into the postscript stream, and that seems to work well to scale the image to the desired size while maintaining the aspect ratio. But I can't find a way to rotate the resized image so that the, e.g., 601 x 792 point (2504 x 3300 pixel) postscript input becomes an 800 x 608 pixel png output.
I'm looking for the ghostscript/postscript fu that I can pass to the gs command line to accomplish this.
I've tried gs command lines with various combinations of -dFIXEDMEDIA, -dFitPage, -dAutoRotatePages=/None, or /All, -c "<> setpagedevice", changing -dDISPLAYWIDTHPOINTS and -dDISPLAYHEIGHTPOINTS, -g[width]x[height], -dUseCropBox with rotated coordinates, and other things I've forgotten. None of those worked, though it wouldn't surprise me if there's a magic combination of some of them that will. I just haven't been able to find it.
Here is the core code that produces the scaled but not rotated output:
## "$molps" is the input ps file read to a variable
## insert the PS "scale" command
$molps = $sf . " " . $sf . " scale\n" . $molps;
$gsopt1 = " -r300 -dGraphicsAlphaBits=4 -dTextAlphaBits=4";
$gsopt1 = $gsopt1 . " -dDEVICEWIDTHPOINTS=$device_width_points";
$gsopt1 = $gsopt1 . " -dDEVICEHEIGHTPOINTS=$device_height_points";
$gsopt1 = $gsopt1 . " -sOutputFile=" . $outfile;
$gscmd = "gs -q -sDEVICE=pnggray -dNOPAUSE -dBATCH " . $gsopt1 . " - ";
system("echo \"$molps\" \| $gscmd");
$device_width_points and $device_height_points are calculated by taking the original image size and applying the scaling factor $sf.
I'll be grateful to anyone who can show me the way to accomplish this. Thanks!
Better Answer:
You almost had it with your initial research. Just set orientation in the gs call:
... | gs ... -dAutoRotatePages=/None -c '<</Orientation 3>> setpagedevice' ...
cf. discussion of setpagedevice in the Red Book, and ghostscript docs (just before section 6.2)
Original Answer:
As well as "scale", you need "rotate" and "translate", not necessarily in that order.
Presumably these are single-page PostScript files?
If you know the bounding box of the Postscript, and the dimensions of the png, it is not too arduous to calculate the necessary transformation. It'll be about one line of code. You just need to ensure you inject it in the correct place.
Chapter 6 of the Blue Book has lots of details
A ubc.ca paper provides some illustrated examples (skip to page 4)
Simple PostScript file to play around with. You'll just need the three translate,scale,rotate commands in some order. The rest is for demonstrating what's going on.
%!
% function to define a 400x400 box outline, origin at 0,0 (bottom left)
/box { 0 0 moveto 0 400 lineto 400 400 lineto 400 0 lineto closepath } def
box clip % pretend the box is our bounding box
clippath stroke % draw initial black bounding box
(Helvetica) findfont 50 scalefont setfont % setup a font
% draw box, and show some text # 100,100
box stroke
100 100 moveto (original) show
% try out some transforms
1 0 0 setrgbcolor % red
.5 .5 scale
box stroke
100 100 moveto (+scaled) show
0 1 0 setrgbcolor % green
300 100 translate
box stroke
100 100 moveto (+translated) show
0 0 1 setrgbcolor % blue
45 rotate
box stroke
100 100 moveto (+rotated) show
showpage
It may be possible to insert the calculated transformation into the gs commandline like this:
... | gs ... -c '1 2 scale 3 4 translate 5 6 rotate' -# ...
Thanks to JHNC, I think I have it licked now, and for the benefit of posterity, here's what worked. (Please upvote JHNC, not this answer.)
## code to determine original size, scaling factor, rotation goes above
my $device_width_points;
my $device_height_points;
my $orientation;
if ($rotation) {
$orientation = 3;
$device_width_points = $ytotal_png_pt;
$device_height_points = $xtotal_png_pt;
} else {
$orientation = 0;
$device_width_points = $xtotal_png_pt;
$device_height_points = $ytotal_png_pt;
}
my $orientation_string =
" -dAutoRotatePages=/None -c '<</Orientation " .
$orientation . ">> setpagedevice'";
## $ps = .ps file read into variable
## insert the PS "scale" command
$ps = $sf . " " . $sf . " scale\n" . $ps;
$gsopt1 = " -r300 -dGraphicsAlphaBits=4 -dTextAlphaBits=4";
$gsopt1 = $gsopt1 . " -dDEVICEWIDTHPOINTS=$device_width_points";
$gsopt1 = $gsopt1 . " -dDEVICEHEIGHTPOINTS=$device_height_points";
$gsopt1 = $gsopt1 . " -sOutputFile=" . $outfile;
$gsopt1 = $gsopt1 . $orientation_string;
$gscmd = "gs -q -sDEVICE=pnggray -dNOPAUSE -dBATCH " . $gsopt1 . " - ";
system("echo \"$ps\" \| $gscmd");
One of the problems I had was that some options apparently don't play well together -- for example, I tried using the -g option to set the output size in pixels, but in that case the rotation didn't work. Using the DEVICE...POINTS commands instead did work.
I have a series of data, for example:
0.767838478
0.702426493
0.733858228
0.703275979
0.651456058
0.62427187
0.742353261
0.646359026
0.695630431
0.659101665
0.598786652
0.592840135
0.59199059
which I know fits best to an equation of the form:
y=ae^(b*x)+c
How can I fit the custom function to this data?
Similar question had been already asked on LibreOffice forum without a proper answer. I would appreciate if you could help me know how to do this. Preferably answers applying to any custom function rather than workarounds to this specific case.
There are multiple possible solutions for this. But one approach would be the following:
For determining the aand b in the trend line function y = a*e^(b*x) there are solutions using native Calc functions (LINEST, EXP, LN).
So we could the y = a*e^(b*x)+c taking as y-c= a*e^(b*x) and so if we are knowing c, the solution for y = a*e^(b*x) could be taken too. How to know c? One approach is described in Exponential Curve Fitting. There approximation of b, a and then c are made.
I have the main part of the delphi code from Exponential Curve Fitting : source listing translated to StarBasic for Calc. The part of the fine tuning of c is not translated until now. To-Do for you as professional and enthusiast programmers.
Example:
Data:
x y
0 0.767838478
1 0.702426493
2 0.733858228
3 0.703275979
4 0.651456058
5 0.62427187
6 0.742353261
7 0.646359026
8 0.695630431
9 0.659101665
10 0.598786652
11 0.592840135
12 0.59199059
Formulas:
B17: =EXP(INDEX(LINEST(LN($B$2:$B$14),$A$2:$A$14),1,2))
C17: =INDEX(LINEST(LN($B$2:$B$14),$A$2:$A$14),1,1)
y = a*e^(b*x) is also the function used for the chart's trend line calculation.
B19: =INDEX(TRENDEXPPLUSC($B$2:$B$14,$A$2:$A$14),1,1)
C19: =INDEX(TRENDEXPPLUSC($B$2:$B$14,$A$2:$A$14),1,2)
D19: =INDEX(TRENDEXPPLUSC($B$2:$B$14,$A$2:$A$14),1,3)
Code:
function trendExpPlusC(rangey as variant, rangex as variant) as variant
'get values from ranges
redim x(ubound(rangex)-1) as double
redim y(ubound(rangex)-1) as double
for i = lbound(x) to ubound(x)
x(i) = rangex(i+1,1)
y(i) = rangey(i+1,1)
next
'make helper arrays
redim dx(ubound(x)-1) as double
redim dy(ubound(x)-1) as double
redim dxyx(ubound(x)-1) as double
redim dxyy(ubound(x)-1) as double
for i = lbound(x) to ubound(x)-1
dx(i) = x(i+1) - x(i)
dy(i) = y(i+1) - y(i)
dxyx(i) = (x(i+1) + x(i))/2
dxyy(i) = dy(i) / dx(i)
next
'approximate b
s = 0
errcnt = 0
for i = lbound(dxyx) to ubound(dxyx)-1
on error goto errorhandler
s = s + log(abs(dxyy(i+1) / dxyy(i))) / (dxyx(i+1) - dxyx(i))
on error goto 0
next
b = s / (ubound(dxyx) - errcnt)
'approximate a
s = 0
errcnt = 0
for i = lbound(dx) to ubound(dx)
on error goto errorhandler
s = s + dy(i) / (exp(b * x(i+1)) - exp(b * x(i)))
on error goto 0
next
a = s / (ubound(dx) + 1 - errcnt)
'approximate c
s = 0
errcnt = 0
for i = lbound(x) to ubound(x)
on error goto errorhandler
s = s + y(i) - a * exp(b * x(i))
on error goto 0
next
c = s / (ubound(x) + 1 - errcnt)
'make y for (y - c) = a*e^(b*x)
for i = lbound(x) to ubound(x)
y(i) = log(abs(y(i) - c))
next
'get a and b from LINEST for (y - c) = a*e^(b*x)
oFunctionAccess = createUnoService( "com.sun.star.sheet.FunctionAccess" )
args = array(array(y), array(x))
ab = oFunctionAccess.CallFunction("LINEST", args)
if a < 0 then a = -exp(ab(0)(1)) else a = exp(ab(0)(1))
b = ab(0)(0)
trendExpPlusC = array(a, b, c)
exit function
errorhandler:
errcnt = errcnt + 1
resume next
end function
The formula y = beax is the exponential regression equation for LibreOffice chart trend lines.
LibreOffice exports all settings
All the settings of LibreOffice, all in the LibreOffice folder.
C:\Users\a←When installing the operating system, the name
entered.\AppData←File Manager ~ "Hidden project" to open, the AppData
folder will be displayed.\Roaming\LibreOffice
Back up the LibreOffice folder, when reinstalling, put the LibreOffice folder in its original place.
Note:
1. If the installation is preview edition, because the name of preview edition is LibreOfficeDev, so the LibreOfficeDev folder will be
displayed.
2. Formal edition can be installed together with preview edition, if both formal edition and preview edition are installed, LibreOffice
folder and LibreOfficeDev folder will be displayed.
3. To clear all settings, just delete the LibreOffice folder, then open the program, a new LibreOffice folder will be created.
LibreOffice exports a single toolbar I made
Common path
C:\Users\a←When installing the operating system, the name
entered.\AppData←File Manager ~ "Hidden project" to open, the AppData
folder will be
displayed.\Roaming\LibreOffice\4\user\config\soffice.cfg\modules\Please
connect the branch path of the individual software below.
Branch path
\modules\StartModule\toolbar\The "Start" toolbar I made is placed here.
\modules\swriter\toolbar\The "writer" toolbar I made is placed here.
\modules\scalc\toolbar\The "calc" toolbar I made is placed here.
\modules\simpress\toolbar\The "impress" toolbar I made is placed here.
\modules\sdraw\toolbar\The "draw" toolbar I made is placed here.
\modules\smath\toolbar\The "math" toolbar I made is placed here.
\modules\dbapp\toolbar\The "base" toolbar I made is placed here.
Backup file, when reinstalling, put the file in the original place.
Note:
Because of the toolbar that I made myself, default file name, will automatically use Numbering, so to open the file, can know the name of
the toolbar.
The front file name "custom_toolbar_" cannot be changed, change will cause error, behind's file name can be changed. For example:
custom_toolbar_c01611ed.xml→custom_toolbar_AAA.xml.
Do well of toolbar, can be copied to other places to use. For example: In the "writer" Do well of toolbar, can be copied to "calc"
places to use.
LibreOffice self-made symbol toolbar
Step 1 Start "Recording Macros function" Tools\Options\Advanced\Enable macro recording（Tick）, in the
"Tools\Macros", the "Record Macro" option will appear.
Step 2 Recording Macros Tools\Macros\Record Macro→Recording action (click "Ω" to enter symbol→select symbol→Insert)→Stop
Recording→The name Macros stored in "Module1" is Main→Modify Main
name→Save.
Step 3 Add item new toolbar Tools\Customize\Toolbar→Add→Enter a name (example: symbol)→OK, the new toolbar will appear in the top
left.
Step 4 Will Macros Add item new toolbar Tools\Customize\Toolbar\Category\Macros\My
Macros\Standard\Module1\Main→Click "Main"→Add item→Modify→Rename (can
be named with symbol)→OK→OK.
I write articles on chess. I often need to describe a chess position, using a standard format named FEN, and would like it to be automatically converted to a png image, and when I export the org document as LaTeX or html the image to be inlined. I think it can be done because ditaa seems to work similarly.
For example, with the FEN string "8/pppr1kpp/8/8/8/5P2/PPP1RKPP/8 w - - 0 1" as input, I create a tex file named chessboard.tex:
\documentclass[border={0 0 3 0}, convert={density=150}]{standalone}
\usepackage{xskak}
\usepackage{chessboard}
\usepackage{chessfss}
\usepackage{fontspec}
\begin{document}
\setchessboard{normalboard, showmover=true, moverstyle=triangle, label=false}
\setboardfontfamily{merida}
\fenboard{8/pppr1kpp/8/8/8/5P2/PPP1RKPP/8 w - - 0 1} \chessboard
\end{document}
which, with the shell command $> xelatex --shell-escape chessboard.tex, produces the following png image (thanks to the use of the standalone package).
How can I automate this process, so that I could put in an org file something like
#+BEGIN_SRC chessfen
8/pppr1kpp/8/8/8/5P2/PPP1RKPP/8 w - - 0 1
#+END_SRC
and have the above process automated?
Something like this?
#+title: Chess
#+startup: inlineimages
#+property: header-args:latex+ :imagemagick yes :iminoptions -density 300 -resize 400
#+property: header-args:latex+ :headers '("\\usepackage{chessboard}\\usepackage{xskak}\\usepackage{chessfss}") :border 1pt
* Chess
#+begin_src latex :file chess.png :results raw
\setchessboard{normalboard, showmover=true, moverstyle=triangle, label=false}
\fenboard{8/pppr1kpp/8/8/8/5P2/PPP1RKPP/8 w - - 0 1} \chessboard
#+end_src
This modification of rvf0068's answer works for me, after manually installing the necessary LaTeX packages (that can be found by inspecting in the error log output):
#+property: header-args:latex+ :headers '("\\usepackage{chessboard}\\usepackage{xskak}\\usepackage{chessfss}") :border 1pt
#+header: :imagemagick "t"
#+header: :results file raw
#+header: :exports results
#+header: :fit yes :border 0.5cm
#+header: :iminoptions -density 600 :imoutoptions -geometry 600
#+begin_src latex :file alburt_vs_kasparov_1978.png
\setchessboard{normalboard, showmover=false, moverstyle=triangle, label=false}
\fenboard{8/pppr1kpp/8/8/8/5P2/PPP1RKPP/8 w - - 0 1} \chessboard
#+end_src
# Local Variables:
# org-latex-pdf-process: ("xelatex -shell-escape -interaction=nonstopmode -output-directory=%o %f"
# "xelatex -shell-escape -interaction=nonstopmode -output-directory=%o %f"
# "xelatex -shell-escape -interaction=nonstopmode -output-directory=%o %f")
# End:
I use LaTeX environments directly to typeset chess, with no src blocks:
Then, the white brings the king
- to the closest rank to the opposing king and
- to the file one next to that of the opposing king toward the center.
\begin{center}
\fenboard{7k/R7/8/8/8/8/8/7K w - - 0 2}
\mainline{2. Kg2 Kf8 3. Kf3 Ke8 4. Ke4 Kd8 5. Kd5 Kc8 6. Kd6}
\par
\showboard
\end{center}