I'm trying to include the infinity symbol ∞ in my axis label (e.g. the expression δ∞), so I typed \delta_{\infty}. However, I only see the delta symbol δ but the infinity symbol is portrayed as a subscripted black diamond with a question mark inside.
The interpreter is set to Tex and I tried different fonts with other symbols. The greek letters seem to be working but other symbols like \clubsuit (♣) don't. Do I need to make any other changes to the settings?
From this I make up that you should use LaTeX as the interpreter, rather than TeX:
http://www.mathworks.com/matlabcentral/answers/21984
If you're still looking for answer, it works for you: \delta_\infty = δ∞
Related
I want to use the → character with two // strokes through the arrow but cannot find the unicode value for it anywhere. Does this exist in unicode? If not, is there a way to recreate it?
There are six Unicode characters whose name matches a right arrow with a double stroke, making use of the regular expression: /right.*arrow.*double.*stroke/.
Only two characters appear to be relevant candidates:
⇻ U+21FB RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE
⭼ U+2B7C RIGHTWARDS TRIANGLE-HEADED ARROW WITH DOUBLE HORIZONTAL STROKE
(* RIGHTWARDS TRIANGLE-HEADED ARROW WITH DOUBLE VERTICAL STROKE)
Notes:
The official Unicode name of U+2B7C was initially wrong, but a corrected name has been added later as an alias.
U+2B7C appears to be quite uncommon, no suitable font was available in the OS used for the screenshot. Still, it is possible to see what it should look like in the Miscellaneous Symbols and Arrows - Range: 2B00–2BFF PDF document:
I was not successful in finding what you were looking for (negative result). U+0219B is a "Rightwards Arrow with Stroke" and U+021FB "Rightwards Arrow with Double Vertical Stroke". If it exist, it would probably be called "Rightwards Arrow with Double Stroke". https://en.wikipedia.org/wiki/Arrow_(symbol)
The following Unicode sequences should describe your character, but unfortunately fonts are not helping.
→⃫ : \u2192\u20EB
⟶⃫ : \u27F6\u20EB
They are normal and long arrow, with the combining U+20EB: COMBINING LONG DOUBLE SOLIDUS OVERLAY (long double slash overlay). You may find a technical font which can display both in the expected way.
You may get something acceptable also with:
⎯⎯⎯⃫⟶ \u23AF\u23AF\u23AF\u20EB\u27F6 (using arrow extension line)
⎯⎯⃫⟶ \u23AF\u23AF\u20EB\u27F6
Depending on the environment, one of the two seem much better (on my computers).
So: you can express it (semantically) with Unicode, but standards fonts are not helping us. You should experiment with many symbols/mathematical fonts, to get an acceptable solution.
As alternative, you can build such image easily with SVG (and use a SVG as character image).
I want to make \mu to appear the same size as the other letters, how can i do that?
title('Größen-Parameter x in dem spongiösen Knochen(300\mum, 600\mum und 2000\mum)');
To answer the question in the title:
You can adjust the font size of a letter (or a text of any length) with {\fontsize{size},letter}. E.g.:
title('Größen-Parameter x in dem spongiösen Knochen(300{\fontsize{14}\mu}m, 600{\fontsize{14}\mu}m und 2000{\fontsize{14}\mu}m)');
However, your actual problem seems to be that the mu's appear slightly smaller than the rest of the text. The reason for this is that Matlab by default interprets normal text as literal characters (WYSIWYG) while using a latex interpreter if you call a latex command such as \mu. This causes those letters to be displayed differently.
Of course you can just increase the size of those letters, but that's not very elegant and the letters will still have a different style. As an alternative I would suggest using a Latex interpreter for the whole text - aside from solving your problem, it will also look nicer!
title('Groessen-Parameter x in dem spongioesen Knochen (300 $\mu$m, 600 $\mu$m und 2000 $\mu$m)','interpreter','latex');
The only problem are your german special characters (ö and that double s thingy). To display those correctly you would have to load the german language package ngerman. This isn't easy but there are instructions here. However, if you are using a german matlab (if that's a thing) it might work without that.
I am trying this example:
http://www.mathworks.com/help/symbolic/latex.html
Let's say I wanted to resize those labels. How? I can't figure out any LaTeX code, and 'fontsize' does not do the trick.
This hits a sore spot when it comes to Matlab's support for (or use of) Latex. The normal font-size commands from Latex aren't available. (In Latex normally you'd just say \Large{Text ... $x$} or even \normalsize ....)
To do this in a Matlab plot you can add fontsize spec at the end
title(['For $x$ and ...'], 'Interpreter', 'latex', 'fontsize', 14)
For more discussion and how to change font type as well see this post. Note that there are not so many fonts readily available in Matlab. To preserve sanity I'd keep this kind of tweaking to the minimum.
There is another method that will work anywhere in Matlab where you can use Latex -- in any text, in the middle of a string, etc: You can drop to Latex's lower level font specification.
title(['\fontsize{15}{0}\selectfont For $x$ and ...'], 'Interpreter', 'latex')
The first command \fontsize{}{} specifies the font, the second one \selectfont actually changes it for the rest of the text. When you want to switch to a different font, even mid-string, you again issue \fontsize{12}{0}\selectfont and you have that font size after that point. The only thing you need to change is the size (I used 15 and 12 as examples), the rest is boilerplate (for this purpose).
See what these things mean and more discussion in this post. For far more detail on fonts in Matlab see this article. For how to change fonts across the whole document see this post.
There are yet other ways but it gets progressively trickier and this should be enough. Probably the best advice is to set it once for the whole document. That also makes sense typesetting-wise.
Note. The font command of the second example must be given outside of math mode. Latex has two major modes, text and math. To make it go to 'math mode', where it processes everything as it were math symbols, you put a $, or $$. (There are yet many other ways, but in Matlab's strings this is all you'll ever use.) When you want it to go back to typesetting text normally, you end math mode with another $, or $$. All math is in between $...$, everything else is normal text.
This is some text, now typeset some math: $y = x^2$ ... back to text.
The font commands do not work in math mode but need be given outside the $...$. They will apply to any following math as well. In a plot command we'd say
ylabel(['\fontsize{16}{0}\selectfont $\dot{x}$'], 'interpreter','latex');
Here is the line that worked:
ylabel('$x_e, x_c$', 'interpreter','latex', 'fontsize', 32);
Obviously, between the dollar signs can be whatever appropriate LaTeX expression desired.
So recently I decided to not use the standard markers that Matlab provides and use my own via: a set of fonts including Webdings or WingDings. I make a standard scatter plot, and plot the text (in wingdings), using the text command, over the locations of the markers.
When I save these plots as png files, they print perfectly. They also appear perfectly on my screen after plotting.
However when I save these plots as eps files, the webdings are turning into their original letters 'l' or 'w'. It also looks like it's plotting them in a Courier font, but my default is Helvetica.
I've read through this previous post, but my question differs in that he is looking to use Latex as the interpreter and to include fonts, whereas I don't want to use Latex as the interpreter. However, it seems like my default interpreter (not sure what that is), isn't doing the job when converting to EPS.
Example:
imageR='w'
text(xf2,yf2,imageR,'fontName',font,'FontSize',fontR,'HorizontalAl','left','color','w')
I figured it out....took me way too long.
Ghostscript / Postscript only export with a few fonts when you are exporting eps files.
This link was incredibly helpful.
I just switched from wingdings/webdings to ZapfDinbats...Practically the same thing...
Below is the user interface I have created to simulate LDPC coding and decoding
The code sequence is decoded iteratively by passing values between the left and right nodes through the connections.
The first thing it would be good to add in order to improve visualization is to add arrows to the connections in the direction of passing values. The alternative is to draw a bigger arrow at the top of the connection showing the direction.
Another thing I would like to do is displaying the current mathematical operation below the connection (in this example c * H'). What I don't know how to do is displaying special characters and mathematical symbols and other kinds of text such as subscript and superscript in the figure (for example sum sign and subscript "T" instead of sign ="'" to indicate transposed matrix).
I would be very thankful if anyone could point to any useful resources for the questions above or show the solution.
Thank you.
To add arrows, you can either use the built-in QUIVER, or, for more options, ARROW from the file exchange. Both of these have to be plotted into axes, so if you want a big arrow on the top, you have to create an additional set of axes above the main axes.
As far as I know, you cannot use TeX or LaTeX symbols in text uicontrols. However, you can use them in axes labels. Thus, I suggest that you add an XLabel to the axes, for example
xlabel('\sigma c*H_T')
or (note the $-signs required for LaTeX)
xlabel('$\sum c*H_T$','interpreter','latex')
EDIT
I hadn't mentioned the use of text (as suggested by #gnovice and #YYC) because I thought it wasn't possible to place text outside of the axes. It turns out that I was wrong. text(0.5,-0.2,'\Sigma etc.') should work fine as well. I guess the only advantage of using 'xlabel' would be that you can easily add and position the axes label during GUI creation.
In regards to the 1st question, annotation (http://www.mathworks.com/access/helpdesk/help/techdoc/ref/annotation.html) might be an alternative solution.
In regards to the 2nd question, try text property in Matlab Help.
Search "Character Sequence" for the special characters; search "Specifying Subscript and Superscript Characters" for the subscript and superscript.
For drawing the arrow, I would go Jonas' suggestion arrow.m by Erik Johnson on the MathWorks File Exchange. It's the easiest way I've found to create arrows in figures.
For creating text with symbols, you can use the function TEXT. It lets you place text at a given point in an axes, and you can use the 'tex' (default) or 'latex' options for the 'Interpreter' property to get access to different symbols. For example, this places the text you want at the point (0,0) using 'latex' as the interpreter:
hText = text(0,0,'$\sum c*H_T$','Interpreter','latex');
The variable hText is a handle to the text object created, which you can then use with the SET command to change the properties of the object (string, position, etc.).