I wrote a simple macro that results in inserting a text using function
drawString(text, xposition, yposition);
Is there a way to delete the text?
Thanks in advance
The drawString macro function will irreversibly add the text into the pixel data of the image.
To add text as an overlay instead, use Overlay.drawString("text", x, y) (see this example). You can then remove the text by hiding or removing the overlay.
Related
If I export my matlab figure as an eps using:
print('myfig','-depsc')
I then open it in another software, in my case Illustrator CS6.
The text appears ok, but what should be a single text box, say a legend entry, is actually multiple text boxes arranged so that it looks like one.
In the image below, the black text is what it looks like first, but I have also shown a copy of the same text, with each text box a different color.
If I want to edit any of this its very difficult as the space will then be messed up. Also if I change the font, the kerning gets messed up.
I have also tried using the text command to place text on the axis, and this also ends up in multiple text boxes.
Is there any way to fix this?
Am I missing something?
Just to be clear, I would like to fix matlab's eps, Not use a different software.
I have 4 different subplots and I would like to create main title, I read that this can be done by using suptitle function, however, it worked well but the problem is that the title is too bold and large. How can I make it smaller ?!
Thank you guys :)
Save the handle to the text label generated with suptitle, and set the text properties:
h = suptitle(...)
set(h,'FontSize',20,'FontWeight','normal')
my problem is I want to have a box for additional bigger comments to the graph.
How can I create this box, so that it will be always on the right bottom side outside of my graph, and it will be automatically adjusting its size to the amount of text inside? Also, if I will have longer text, I need it to be split into more lines, not just one line extremely long.
I use it like that, however I have a poor control over what is happening, this just creates a certain size in a certain place, text is cut.. please help :)
x = rand(110)*100;
y = x;
plot(x,y)
MyBox = uicontrol('style','text')
set(MyBox,'String','optional longer information to be put into diagram')
set(MyBox,'Position',[10,0,40,10])
I am afraid you can not do that automatically - Text boxes do not use callbacks. From the documentation:
Users cannot change static text interactively. Static text controls do not activate callback routines when clicked.
What you can do is call textwrap function, which will automatically wrap the text you pass to it and return new Text box position:
MyBox = uicontrol('style','text');
% set initial position - first three values are kept constant after wrap, the hight can be changed
set(MyBox,'Position',[10,10,30,10])
% adjust the height of your Text box and wrap the text
[outstring,newpos] = textwrap(MyBox,{'optional longer information to be put into diagram'});
% set new position and text
set(MyBox,'Position',newpos, 'String', outstring)
You will have to call textwrap and set(...) yourself whenever you change the string in the text box.
I need to render rich text using Core Text in my view (simple formatting, multiple fonts in one line of texts, etc.). I am wondering if text rendered this way can be selected by user using (standard copy / paste function)?
I implemented a text selection in CoreText. It is really a hard work... But it's doable.
Basically you have to save all CTLine rects and origins using CTFrameGetLineOrigins(1), CTLineGetTypographicBounds(2), CTLineGetStringRange(3) and CTLineGetOffsetForStringIndex(4).
The line rect can be calculated using the origin(1), ascent(2), descent(2) and offset(3)(4) as shown bellow.
lineRect = CGRectMake(origin.x + offset,
origin.y - descent,
offset,
ascent + descent);
After doing that, you can test which line has the touched point looping the lines (always remember that CoreText uses inverse Y coordinates).
Knowing the line that has the touched point, you can know the letter that is located at that point (or the nearest letter) using CTLineGetStringIndexForPosition.
Here's one screenshot.
For that loupe, I used the code shown in this post.
Edit:
To draw the blue background selection, you have to paint the rect using CGContextFillRect. Unfortunately, there's no background color in NSAttributedString.
I have a label and I wish to increase the spacing between characters.
I tried adding a space between each character, but this was too much
Perhaps there is a font with large spacing between the letters?
If all else fails, I am considering putting each character (only a size character code), into its own textbox.
Any ideas on how to achieve this?
There is a way to insert a half space, but I don't recall the exact command (option-spacebar?). Wikipedia has a complete list of spaces you can use.
Another approach would be a UIWebView with the letter-spacing CSS attribute set.
You're better off creating a custom view and using your drawRect routine to draw the text manually. You can use CFAttributedString to hold your text along with kerning information.
Update: sounds like you can't actually use CFAttributedString to draw text on the iPhone. You can still use your drawRect to draw the customized text, but it will take some more work to actually get your custom kerning to work.