LyX ⇒ Math in Lyx View and PDF View

[harper]

Hi,

i have a problem when converting formulas to PDF.

In LyX, the math looks really good, but when i view the document as a PDF, it looks really crappy. I have included a screenshot of the math in LyX and in the PDF. Can i do something about this?

thx for any help!

[justdeath]

It really does look crappy.

First, are you using some decent PDF viewer? Like Adobe Reader, Foxit Reader, Sumatra PDF?

Second, I compiled with TeXLive and you can see the result. But MiKTeX should also have very good output.

I am almost certain it is from the PDF viewer not rendering the fonts correctly.

I did the first row with \bar, the second with \overline. There is a slight difference.

Clipboard05.jpg (14.18 KiB) Viewed 5392 times

Nikolay

[harper]

I used the PDF XChange Viewer and the build-in thingy that comes with Linux Mint..

I tried Foxit now and it really does look better. But still, the minus from the "-1" looks like an extension to the "\bar".. Is there anything that can be done about this?

I added the code and a new picture, taken with foxit reader for reference..

Code: Select all

\begin{eqnarray}
\bar{s}_{ap}^{-1}\cdot\bar{a} & = & \bar{v}_{ap}\label{eq:}\\
\bar{s}_{gt}^{-1}\cdot\bar{a} & = & \bar{v}_{gt}\label{eq:-1}
\end{eqnarray}

PS: Thanks to the admin who took the time to clean up my messy post..

[Stefan Kottwitz]

Btw. eqnarray is obsolet and not consistent regarding other math environments, so I would not use it. Have a look at the spacing around the equal sign and compare it to simple equation environments. Perhaps have a look at eqnarray vs. align for further information.

Stefan

[harper]

Align does not seem to make a difference. It looks the same.

Anyway, i plan to hand my thesis in tomorrow, so this will be a detail that my professor has to live with^^

[Stefan Kottwitz]

No need to change, it was just a remark.

Here it can be compared: first equation, then align, then the different spacing with eqnarray:

equations.png (3.37 KiB) Viewed 5375 times

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
    \bar{s}_{ap}^{-1}\cdot\bar{a} = \bar{v}_{ap}
\end{equation}
\begin{align}
    \bar{s}_{ap}^{-1}\cdot\bar{a} &= \bar{v}_{ap}\\
    \bar{s}_{gt}^{-1}\cdot\bar{a} &= \bar{v}_{gt}
\end{align}
\begin{eqnarray}
    \bar{s}_{ap}^{-1}\cdot\bar{a} & = & \bar{v}_{ap}\\
    \bar{s}_{gt}^{-1}\cdot\bar{a} & = & \bar{v}_{gt}
\end{eqnarray}
\end{document}

Stefan

[mech_e]

you could superscript the minus sign as follows:

Code: Select all

\documentclass{article}
    \usepackage{amsmath}
    \begin{document}
    \begin{equation}
        \bar{s}_{ap}^{^-1}\cdot\bar{a} = \bar{v}_{ap}
    \end{equation}
    \begin{align}
        \bar{s}_{ap}^{-1}\cdot\bar{a} &= \bar{v}_{ap}\\
        \bar{s}_{gt}^{-1}\cdot\bar{a} &= \bar{v}_{gt}
    \end{align}
    \begin{eqnarray}
        \bar{s}_{ap}^{-1}\cdot\bar{a} & = & \bar{v}_{ap}\\
        \bar{s}_{gt}^{-1}\cdot\bar{a} & = & \bar{v}_{gt}
    \end{eqnarray}
    \end{document}