Align 2 lines horizontally starting from a dash symbol , with the first previous one without subscript and the second previous one with subscript

alignhorizontal alignmentphantomspacingsubscripts

I try to align horizontally 2 lines after 2 words, the first one not containing a subscript in text (see below with "WL") and the second one with a subscript (see GC_{sp}).

I used for this multiple attempts like \hphantom or "\," but none of them is working. As you can see, there is a little shift between the 2 first left dash '-' symbols.

I want the first left dash '-' symbol on the first line to be at the same place than the second line from an horizontal alignement point of view, i.e to be slightly shifted to the right.

Here the code snippet :

fisher_1.name = '\\parbox{9in}{ $ \\mathrm{WL\\hphantom{ } - Opt. Flat. No \gamma -} \\mathrm{FoM=47.05} $ }'
fisher_2.name = '\\parbox{9in}{ $ \\mathrm{GC_{sp} - Opt. Flat. No \gamma -} \\mathrm{FoM=60.49} $ }

If someone could have the trick to solve this issue…

EDIT1 :

the fisher_1.name and fisher_2.name are injected into the following structure from the library cosmicfish :

fisher_list = fpa.CosmicFish_FisherAnalysis(
    fisher_list=[
        fisher_1,
        fisher_2,
    ],
)

I recall that I would like the first '-' symbol to be at the same horizontal place from an horizontal alignement point of view, which implies a perfect alignement from the first dash '-' symbol up to the end of string ( 47.05 and 60.49.

The last solution :

fisher_1.name = '\\parbox{9in}{$\\mathrm{WL}$\\hphantom{$\\mathrm{_{sp}}$} - FoM=47.05}'
fisher_2.name = '\\parbox{9in}{$\\mathrm{GC_{sp}}$ - FoM=60.49}'

doesn't work. I can't compensate the gap provocated by subscript _{sp}

EDIT 2: The only solution that works is basically :

fisher_1.name = 'WL   - Opt. Flat. No gamma - FoM=47.05'
fisher_2.name = 'GCsp - Opt. Flat. No gamma - FoM=60.49'

which gives :

With the other solutions suggested, I have compilation errors since I
define fisher_1.name and fisher_2.name in a Python code with the library [cosmicfish][3].

If I want the greek symbol \gamma, this basic solution doesn't work anymore :

fisher_1.name = 'WL   - Opt. Flat. No $\gamma$ - FoM=47.05'
fisher_2.name = 'GCsp - Opt. Flat. No $\gamma$ - FoM=60.49'

the same for :

fisher_1.name = 'WL   - Opt. Flat. No $\\gamma$ - FoM=47.05'
fisher_2.name = 'GCsp - Opt. Flat. No $\\gamma$ - FoM=60.49'

I am disapointed that it doesn't work with all your solutions. I don't know what to do…

EDIT 3: I try to restart from the beginning with this example implemented in my Python code :

fisher_1.name = '\\parbox{\\widthof{$\\mathrm{GC_{sp}}$}}{$\\mathrm{WL}$}  $\\mathrm{-\\ Opt.\\ Flat.\\ No\\ \\gamma - FoM=47.05} $'
fisher_2.name = '\\parbox{\\widthof{$\\mathrm{GC_{sp}}$}}{$\\mathrm{GC_{sp}}$}  $\\mathrm{-\\ Opt.\\ Flat.\\ No\\ \\gamma - FoM=60.49} $'

At the execution of Python code, I get the following errors :

TITLE - name of file : \parbox{\widthof{$\mathrm{GC_{sp}}$}}{$\mathrm{WL}$}  $\mathrm{-\ Opt.\ Flat.\ No\ \gamma - FoM=47.05} $
Traceback (most recent call last):
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/texmanager.py", line 254, in _run_checked_subprocess
    stderr=subprocess.STDOUT)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/subprocess.py", line 411, in check_output
    **kwargs).stdout
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/subprocess.py", line 512, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['latex', '-interaction=nonstopmode', '--halt-on-error', '/Users/fab/.matplotlib/tex.cache/e8dd1b2348d85fb40145a12d56a0f625.tex']' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "main_synthesis.py", line 904, in <module>
    plot_tri(fisher_plotter)
  File "main_synthesis.py", line 206, in plot_tri
    set_triplot_dimensions( self, num_col=len(params_temp), num_rows=len(params_temp), **kwargs )
  File "main_synthesis.py", line 673, in set_triplot_dimensions
    dimensions  = self.get_dimensions_plot_obj()
  File "cosmicfish-pyplots-py3/cosmicfish_pylib/fisher_plot.py", line 778, in get_dimensions_plot_obj
    self.figure.canvas.draw()
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 406, in draw
    self.figure.draw(self.renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/artist.py", line 74, in draw_wrapper
    result = draw(artist, renderer, *args, **kwargs)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/artist.py", line 51, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/figure.py", line 2791, in draw
    renderer, self, artists, self.suppressComposite)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/image.py", line 132, in _draw_list_compositing_images
    a.draw(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/artist.py", line 51, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/legend.py", line 609, in draw
    bbox = self._legend_box.get_window_extent(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 352, in get_window_extent
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 439, in get_extent_offsets
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 439, in <listcomp>
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 347, in get_extent
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 475, in get_extent_offsets
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 475, in <listcomp>
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 347, in get_extent
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 439, in get_extent_offsets
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 439, in <listcomp>
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 347, in get_extent
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 475, in get_extent_offsets
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 475, in <listcomp>
    for c in self.get_visible_children()]
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/offsetbox.py", line 823, in get_extent
    bbox, info, yd = self._text._get_layout(renderer)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/text.py", line 315, in _get_layout
    clean_line, self._fontproperties, ismath=ismath)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 230, in get_text_width_height_descent
    s, fontsize, renderer=self)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/texmanager.py", line 399, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/texmanager.py", line 293, in make_dvi
    texfile], tex, cwd=tmpdir)
  File "/opt/intel/oneapi/intelpython/latest/lib/python3.7/site-packages/matplotlib/texmanager.py", line 267, in _run_checked_subprocess
    exc=exc.output.decode('utf-8'))) from exc
RuntimeError: latex was not able to process the following string:
b'$\\\\mathrm{\\\\parbox{\\\\widthof{$\\\\mathrm{GC_{sp}}$}}{$\\\\mathrm{WL}$}\\\\ \\\\ $\\\\mathrm{-\\\\\\\\ Opt.\\\\\\\\ Flat.\\\\\\\\ No\\\\\\\\ \\\\gamma\\\\ -\\\\ FoM=47.05}\\\\ $}$'

Here is the full report generated by latex:
This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/MacPorts 2020.54632_1) (preloaded format=latex)
 restricted \write18 enabled.
entering extended mode
(/Users/fab/.matplotlib/tex.cache/e8dd1b2348d85fb40145a12d56a0f625.tex
LaTeX2e <2020-02-02> patch level 5
L3 programming layer <2020-03-06>
(/opt/local/share/texmf-texlive/tex/latex/base/article.cls
Document Class: article 2019/12/20 v1.4l Standard LaTeX document class
(/opt/local/share/texmf-texlive/tex/latex/base/size10.clo))
(/opt/local/share/texmf-texlive/tex/latex/type1cm/type1cm.sty)
(/opt/local/share/texmf-texlive/tex/latex/cm-super/type1ec.sty
(/opt/local/share/texmf-texlive/tex/latex/base/t1cmr.fd))
(/opt/local/share/texmf-texlive/tex/latex/base/inputenc.sty)
(/opt/local/share/texmf-texlive/tex/latex/geometry/geometry.sty
(/opt/local/share/texmf-texlive/tex/latex/graphics/keyval.sty)
(/opt/local/share/texmf-texlive/tex/generic/iftex/ifvtex.sty
(/opt/local/share/texmf-texlive/tex/generic/iftex/iftex.sty)))
(/opt/local/share/texmf-texlive/tex/latex/base/textcomp.sty)
(/opt/local/share/texmf-texlive/tex/latex/l3backend/l3backend-dvips.def)
No file e8dd1b2348d85fb40145a12d56a0f625.aux.
*geometry* driver: auto-detecting
*geometry* detected driver: dvips
! Undefined control sequence.
<argument> \widthof
                    {$\mathrm {GC_{sp}}$}
l.19 ....\\ Flat.\\ No\\ \gamma\ -\ FoM=47.05}\ $}
                                                  $}
No pages of output.
Transcript written on e8dd1b2348d85fb40145a12d56a0f625.log.

EDIT 4: A partial solution is done :

    fisher_1.name = '\\parbox{9in}{\\rlap{$\\mathrm{WL}$}\\hphantom{$\\mathrm{GC_{sp}}$} - FoM=47.05}'
    fisher_2.name = '\\parbox{9in}{$\\mathrm{GC_{sp}}$ - FoM=60.49}'

As you can see, and for a reason I ignore, the "WL" string is pushed to the top, I don't why. The font for strings "FoM=47.05" and "FoM=60.49" is also weird.

So, we are near to a solution since the alignement regarding first dash '-' is respected.

SOLUTION : has been found by Heiko Theiße :

these 2 lines did the trick :

   fisher_1.name = '\\rlap{$\\mathrm{WL}$\\hphantom{\\mathrm{GC_{sp}}} - FoM=47.05'
   fisher_2.name = 'GC_{sp} - FoM=60.49'

which produces :

Regards

Best Answer

Use \hphantom{\mathrm{GC_{sp}}}\llap{$\mathrm{WL}$} in the first row and GC_{sp} in the second. The \hphantom produces a space that is as wide as GC_{sp}, and the \llap typesets $\mathrm{WL}$ into that space, right-aligned.

Using \rlap{$\mathrm{WL}$}\hphantom{\mathrm{GC_{sp}}} in the first row instead will make it left-aligned.

Addendum: The following works:

fisher_1.name = '\\rlap{$\\mathrm{WL}$}\\hphantom{\\mathrm{GC_{sp}}} - FoM=47.05'
fisher_2.name = 'GC_{sp} - FoM=60.49'

The challenge is that cosmicfish compiles the rows separately (one LaTeX run per row), therefore \halign or a table package cannot be used.

Notes:

I used \hphantom instead of \phantom as I did not want the vertical size of \sqrt{{\frac{2x}{y **}}} to affect the second row.
Alignment points located inside other terms such as \sqrt and frac are not usually this easy to do, and David's solution was quite clever in moving it outside and inserting a negative \hspace. I personally would never have thought of that as I tend to think of alignment form the left moving towards the right.

Code:

\documentclass{article}
\usepackage{amsmath}

\begin{document}

$\displaystyle \begin{aligned}
&\sqrt{\frac{2x}{y **+** z}}+\sqrt{\frac{2y}{z+x}}+\sqrt{\frac{2z}{x+y}}\\
&\hphantom{\sqrt{{\frac{2x}{y **}}}}\leq 3.
\end{aligned}$

\end{document}

[Tex/LaTex] How to set a function with dash and subscript

I would input f'_{3}.

Beside this: it's a feature of TeX, not a bug, that the subscript position change if there is also a superscript. See Appendix G of the TeXbook. But you can change the fontdimens:

\documentclass{article}%
\begin{document}

$\hbox{}$%initialize math 
\fontdimen16\textfont2=2.7pt
\fontdimen17\textfont2=2.7pt
$f^{}_3 f_3 f^{'}_3 f'_3$

\end{document}

The change is global, so if you want to revert it you will have to save the original values. There is also a package subdepth which does something similar.

Best Answer

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