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User:Luigi.scarso/luatex lunatic (view source)
Revision as of 14:30, 7 December 2009
, 14:30, 7 December 2009→Introduction
=Introduction=
'''After [http://www.ntg.nl/EuroTeX2009 eurotex meeting 2009],
I'm going to fix some typos here and there and
maybe expand some examples too. I estimated that around 20 September article and site will be in synch.'''
----
'''!! W A R N I N G !! '''
* fontforge 20090224 ✔ [[#Fontforge|here]] Useful to check symbols collision, and if one want to play with the last fontforge, eg to draw the outline of a glyph .
* R-2.8.1 with rpy2-2.0.3 (For Maurizio "Mau" Himmelman , GUIT) ✔ [[#R|here]] (someone says also [http://micahelliott.com/2009/03/considering-r-as-python-supplement considering-r-as-python-supplement ]) .
* quantlib 0.9.7 ✔ (need an example with output in pdf)* dbxml-2.4.16 (and sqlite) ✔ [[#dbxml|here]]
= Dedicated systems =
$HOME_LUN/sage/local/bin/python setup.py build
cd $HOME_LUN
mkdir tests-SAGEMATH && cd tests-SAGEMATH
##
## I have already installed prev. python.so, I don't want mess things
For more infos, see [http://root.cern.ch here] ([http://root.cern.ch/cgi-bin/print_hit_bold.pl/root/HowtoPyROOT.html?python#first_hit here] for python stuffs).
Under Linux installation is not difficult at all, so but in this case I choose to not create a luatex-lunatic apart, as done above for sagemath.<br/>See an example [[#ROOT| here]] .
\startluacode
function testSCIPYtest_ROOT(figname,dpifilename)
require("python")
pg = python.globals()
gr = TGraph( n, x, y ) gr.SetLineColor( 2 ) gr.SetLineWidth( 4 ) gr.SetMarkerColor( 4 ) gr.SetMarkerStyle( 21 ) gr.SetTitle( 'a simple graph' ) gr.GetXaxis().SetTitle( 'X title' )\def\testSCIPY[#1]{% gr.GetYaxis().SetTitle( 'Y title' ) gr.Draw( 'ACP' ) c1.Update() c1.Print(filename)\getparameters[scipy][#1]%)\ctxlua{testSCIPY run = pg.run run("\csname scipyfigname\endcsname",filename) "\csname scipydpi\endcsname")}%end\externalfigure[\csname scipyfigname\endcsname]%}stopluacode
\starttext
\startTEXpage
\testSCIPYctxlua{test_ROOT("testsin.pdf")}\rotate[fignamerotation=90]{test-scipy-1\externalfigure[testsin.pdf},dpi][width={1505cm]}]
\stopTEXpage
\stoptext
</texcode>|| </td><td> [[Image:Test-scipyTestsin.pngjpg|600px512px]] </td> |}</tr></table>
\startluacode
function testPILtest_ROOT(imageorig,imagesepiafilename)
require("python")
end
\stopluacode
\defstarttext\SepiaImage#1#2{%startTEXpage\ctxlua{testPILtest_ROOT("#1","#2data.pdf")}%\startcombinationrotate[2*1rotation=90]{\externalfigure[#1]}{\ss Origdata.}{\externalfigure[#2pdf]}{\ss Sepia}\stopcombination} \starttext\startTEXpage\SepiaImage{lena.jpg}{lena-sepia.jpg}
\stopTEXpage
\stoptext
</texcode> || [[Image:Test-PILROOT1.pngjpg|330px300px]]
|}
=ConTeXt mkIV examples= ROOT Here I will collect some tex snippets,just to show some ideas. == Scipy ==This example shot Watch how to literally embedpython code <tt> z = x*np.exp(-x**2-y**2) </tt>original python source is translated in lua code <tt> z = x.__mul__( np.exp( (x.__pow__(2).__add__(y.__pow__(2))).__neg__() ) )</tt>
{|class="wikitable"
|-
|<texcode>
\startluacode
function test_ROOTtestSCIPY(filenamefigname,dpi)
require("python")
pg = python.globals()
python.apply = python.eval('apply') or {}
np = python.import("numpy")
mlab = python.import("matplotlib.mlab")
griddata = mlab.griddata
plt = python.import("matplotlib.pyplot")
ma = np.ma
random = python.import("numpy.random")
uniform = random.uniform
-- make up some randomly distributed data
npts = 200
x = uniform(-2,2,npts)
y = uniform(-2,2,npts)
-- z = x*np.exp(-x**2-y**2)
z = x.__mul__( np.exp( (x.__pow__(2).__add__(y.__pow__(2))).__neg__() ) )
-- define grid.
xi = np.linspace(-2.1,2.1,100)
yi = np.linspace(-2.1,2.1,100)
-- grid the data.
zi = griddata(x,y,z,xi,yi)
-- contour the gridded data, plotting dots
-- at the randomly spaced data points.
-- we put this in python globals space
-- CS = plt.contour(xi,yi,zi,15,linewidths=0.5,colors='k')
pg.xi = xi ; pg.yi = yi ; pg.zi = zi
args = python.eval("[xi,yi,zi,15]")
kv = python.eval("{'linewidth': 0.5 ,'colors' :'k'}")
CS = python.apply(plt.contour, args,kv)
--
pg.jet = plt.cm.jet
args = python.eval("[xi,yi,zi,15]")
kv = python.eval("{'cmap': jet}")
CS = python.apply(plt.contourf, args,kv)
-- draw colorbar
plt.colorbar()
-- plot data points.
pg.x = x; pg.y = y
args = python.eval("[x,y]")
kv = python.eval("{'marker': 'o', 'c':'b','s':5}")
CS = python.apply(plt.scatter, args,kv)
plt.xlim(-2,2)
plt.ylim(-2,2)
plt.title(string.format('griddata test (%i points)',npts))
--plt.savefig(figname, dpi, 'white')
--
pg.figname = figname ; pg.dpi = dpi
args = python.eval("[figname]")
kv = python.eval("{'dpi': dpi ,'facecolor' :'white'}")
CS = python.apply(plt.savefig, args,kv)
end
\stopluacode
\starttext
\startTEXpage
\ctxluatestSCIPY[figname={test_ROOT("testsintest-scipy-1.pdf")}\rotate[rotation,dpi=90]{\externalfigure[testsin.pdf][width=5cm150}]}
\stopTEXpage
\stoptext
</texcode> || [[Image:TestsinTest-scipy.jpgpng|512px600px]]
|}
\starttext
\startTEXpage
\ctxluaSepiaImage{test_ROOT("datalena.pdf")jpg}\rotate[rotation=90]{\externalfigure[datalena-sepia.pdf]jpg}
\stopTEXpage
\stoptext
</texcode> || [[Image:Test-ROOT1PIL.jpgpng|300px330px]]
|}
== ImageMagick ==
def getcurve(self,letter):
self.glname = letter
res_Array = []
res = dict()
try :
#glyph_letter = [ g for g in self.font.glyphs() if g.glyphname == self.glname][0] g = self.font[letter]
except Exception ,e :
res['err'] = str(e)
res_Array.append(res) return resres_Array cntlayer_idx = glyph_letter0; for layer_name in g.layers: layer = g.layers[1layer_name] for contour_idx in range(len(layer)): res = dict() contour = layer[0contour_idx] contour_name = contour.name res['name']= contour.name res['is_quadratic'] = cntcontour.is_quadratic res['closed'] = cntcontour.closed res['points'] = [(p.x,p.y,"%i" %p.on_curve) for p in cnt contour ] res['design_size'] = self.font.design_size res['em'] = self.font.em res_Array.append(res) return resres_Array
def drawmpostpath(self,letter):
res_Array = self.getcurve(letter)
state = 0
paths = ''
for res in res_Array:
temp = ''
for p in res['points'] :
if p[2]=='1' :
if state == 1 :
temp = temp + '-- (%s,%s)' %(p[0] ,p[1]) ; state = 1; continue
else:
temp = temp + '.. (%s,%s)' %(p[0] ,p[1]) ; state = 1; continue
if state == 1 : temp = temp + ' .. controls (%s,%s)' %(p[0],p[1]) ; state =2; continue
if state == 2 : temp = temp + ' and (%s,%s) ' %(p[0],p[1]) ; state =0; continue
if res['closed'] :
if state == 1 :
temp = 'draw ' + temp[2:] + " -- cycle;\n"
else:
temp = 'draw ' + temp[2:] + " .. cycle;\n"
else:
temp = 'draw ' + temp[2:] + ";\n"
paths = paths + temp
return paths
def getmpostpointsSugardrawmpostpoints(self,letter): res res_Array = self.getcurve(letter) path dots = '' for res in res_Array: temp = 'drawdot \n'.join( ["drawdot %s;" %str((p[0],p[1])) for p in res['points'] if p[2] == '1'] )+ "\n" dots = dots + temp return 'drawdot ' +pathdots
if __name__ == '__main__':
s = simpledraw("koeieletterslmmono10-regular.pfbotf") #res = s.getmpostpointsSugar('C') #print res #print s.getmpostoutline('C') print s.getcurve('e') print s.drawmpostpath('e') print s.drawmpostpoints('e')
</pre>
Next lua layer, which in this case is embed in a tex file:
<texcode>
\setupcolors[state=start] \startluacode
function testFontforge(fontfile,letter)
require("python")
testoutlines = python.import("test-fontforge")
s = testoutlines.simpledraw(fontfile)
g = s.getmpostoutlinedrawmpostpath(letter) p = s.getmpostpointsSugardrawmpostpoints(letter) --print( string.format("\%s = \%s ==", letter,g )) tex.sprint(tex.ctxcatcodes,"\\startMPcode") tex.sprint(tex.ctxcatcodes,"pickup pencircle scaled 1pt;") tex.sprint(tex.ctxcatcodes,string.format("draw \%s .. cycle;",g) ) tex.sprint(tex.ctxcatcodes,"pickup pencircle scaled 8pt;") tex.sprint(tex.ctxcatcodes,string.format("\%s",p) ) tex.sprint(tex.ctxcatcodes,"\\stopMPcode")
end
\stopluacode
And this is the result: <br/>
[[Image:Test-fontforge.png|900px]]
== Ghostscript ==
For the first case, we consider an implementation of eps2pdf, being ps2pdf virtually the same .<br/>
Actually there is not a python binding of ghostscript, so we build a simple wrapper
using ctypes module<tt>testgs.py</tt> :
<pre>
=== Build the cointainer ===
First we build the container 'Data.dbxml' in the directory "wikienv" (that must exists) :
<pre>
</pre>
=== Make pdf ===We use this modules <tt>wikidbxml_queryTxn.py</tt>to retrive a page, given a title (it can be also used as basis to build more complex queries, but for now it's adeguate ):
<pre>
def managepara(c,res):
if c.tag == 'para' and (len(c.text.strip()) > 0is not None):
res.append(c.text.strip()+r"\par")
if c.tag == 'para' and (len(c.getchildren())>0):
#open('res.dbk','w').write( " ".join(res.split()) )
res = getConTeXt(title,res)
return res except Exception,e: print "error on read:" ,e fcntl.flock(lockfile, fcntl.LOCK_UN) lockfile.close() def writeres(title,preamble,postamble,filename): res = getArtitleByTitle(title=title) if res is not None : res = res.replace('&',r'\&') res = res.replace('#',r'\#') else: res = '' open(filename,'wb').write( '\n'.join((preamble,res,postamble)) ) pass if __name__ == '__main__': preamble = r"""\usetypescriptfile[type-gentium]\usetypescript[gentium]\setupbodyfont[gentium,10pt]\setuppapersize[A5][A5]\setuplayout[height=middle,topspace=1cm,header={2\lineheight},footer=0pt,backspace=1cm,margin=1cm, width=middle]\starttext""" postamble = r"""\stoptext""" title="Primary mathematics/Numbers" filename = 'res.tex' writeres(title,preamble,postamble,filename)</pre> And in the end mkiv wrapper:<texcode>\usetypescriptfile[type-gentium]\usetypescript[gentium]\setupbodyfont[gentium,10pt]\setuppapersize[A5][A5]\setuplayout[height=middle,topspace=1cm,header={2\lineheight},footer=0pt,backspace=1cm,margin=1cm, width=middle] \startluacodefunction testdbxml(title,preamble,postamble,filename) require("python") pg = python.globals() wikiversity = python.import("wikidbxml_queryTxn") wikiversity.writeres(title,preamble,postamble,filename) end\stopluacode \def\testdbxml[#1]{%\getparameters[dbxml][#1]%\ctxlua{testdbxml("\csname dbxmltitle\endcsname","\csname dbxmlpreamble\endcsname", "\csname dbxmlpostamble\endcsname","\csname dbxmlfilename\endcsname")}%\input \csname dbxmlfilename\endcsname %} \starttext\testdbxml[title={Primary mathematics/Numbers}, preamble={}, postamble={}, filename={testres.tex}]\stoptext</texcode> Here here the result: <table class="wikitable"> <tr><td></td> <td>[[Image:Dbxml-1.png]]</td></tr><tr><td>[[Image:Dbxml-2.png]]</td> <td>[[Image:Dbxml-3.png]]</td></tr></table> One can also use sqlite that comes with python to query for titles <tt>category.db</tt>made from (for example) <tt>enwikiversity-20090627-category.sql</tt>,so reports are more simpler:just put this in python code above, right before 'if __name__' ...:<pre>import sqlite3def querycategory(title): conn = sqlite3.connect('category.db') c = conn.cursor() t = (title,) c.execute('select cat_title from category where cat_title like "%%%s%%" ;' % t) res = [row[0] for row in c] conn.commit() c.close() return res def simplereports(title): res = querycategory(title) j = 0 for r in res: g = r.replace('_',' ') print g title= g.encode('utf8') filename = 'reps%04d.tex' % j writeres(title,'','',filename) j = j+1 return j </pre> Similary, add this to tex code<texcode>\startluacodefunction listtitles(title) require("python") pg = python.globals() wikiversity = python.import("wikidbxml_queryTxn") r = wikiversity.querycategory(title) local j = 0 local res = r[j] or {} while res do local d = string.format("\%s\\par",string.gsub(tostring(res),'_',' ')) tex.sprint(tex.ctxcatcodes,d) j = j+1 res = r[j] endend\stopluacode \startluacodefunction simplereports(title) require("python") pg = python.globals() wikiversity = python.import("wikidbxml_queryTxn") r = wikiversity.simplereports(title) local j = tonumber(r) for v = 0,j-1 do local d = string.format("\\input reps\%04d ",v) tex.sprint(tex.ctxcatcodes,d) end print( j )end\stopluacode</texcode>
<texcode>
\starttext
{\testdbxml[title={Primary mathematics/Numbersbfb Query for 'geometr':}, preamble=\ctxlua{listtitles("geometr")},% postamble={}, filename=\ctxlua{testres.texsimplereports("geometr")}]%
\stoptext
</texcode>