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%eq to write an Equation on a Graph?

 
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PaulLaidler
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Joined: 21 Feb 2005
Posts: 8210
Location: Salford, UK

PostPosted: Sun Jul 26, 2020 7:37 pm    Post subject: Reply with quote

Not at the moment but it is an interesting idea. As it is %eq represents a separate child window with an opaque background. Also, as far as I recall, the symbols are not scalable.

So at the moment you could possibly move it to the desired position but it would probably be too big and you would not be able to see the graph behind it.
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Kenneth_Smith



Joined: 18 May 2012
Posts: 814
Location: Hamilton, Lanarkshire, Scotland.

PostPosted: Mon Jul 27, 2020 9:26 am    Post subject: Reply with quote

I did not have much success when I tried using %eq. For division (horizontal bar), where the numerator contains subscripts the horizontal bar runs through the subscripts. For example, the equation for the inductance of a solenoid:
Code:
iw = winio@('%eq[L ={divide {mu}{sub 0}{mu}{sub r}AN{sup 2};len}]',0,0)

Where the denominator contains a superscript the superscript is correctly positioned below the horizontal bar.
Code:
iw = winio@('%eq[h = {divide 1;n{sup 2}}]',0,0)

Because of this when I need to display equations, I have adopted the approach of generating images using another tool (e.g. Word) and importing these images as resources. These can then be copied into the %pl graphics region via the call back function.
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