coordinate data in the text command

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hans
hans 2021-12-16
评论： hans 2021-12-16
Is it possible to somehow put both, x- and y-coordinate, with a single variable of two fields into the location fields of the text-command?
instead of :
loc = [0.5,0.5];
figure; text(loc(1),loc(2),'a')
something like
Is it possible to somehow put both, x- and y-coordinate, into the location fields of the text-command?
instead of :
loc = [0.5;0.5];
figure; text(loc,'a')

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采纳的回答

Rik
Rik 2021-12-16
You have two options that I'm aware of:
  1. Write a wrapper function that will split your vector as approriate.
  2. Use a comma separated list: loc=[0.5;0.5];loc=num2cell(loc);text(loc{:},'a')
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hans
hans 2021-12-16
编辑：hans 2021-12-16
"Your usage of the terms "writing and reading" is not clear to me. "
  • I used writing for may be a better word might be "assigning a value to a variable" e.g. a=1
  • I used reading for replacing the "value of a variable" by the "variable"
"No, a comma separated list is a list of variables separated by commas."
That is obviously correct. But I try to talk about the field of application of this list.
So may be it is more suitable to modify my statement by ""The "comma separated" is a special communication form for assigning values to arrays and using these arrays to replace a comma separated list of arguments, which was expected in a command"
My point is, that the application of a comma separated list is only in the communication i.e. assigning and use of arrays
hans
hans 2021-12-16
May be to tell it shorter:
It seems to me comma separated lists have their dominating area of application assigning values to arrays and to fill argument lists of commands/functions

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更多回答（1 个）

Walter Roberson
Walter Roberson 2021-12-16
text('String', 'a', 'Position', loc)
  1 个评论
hans
hans 2021-12-16
编辑：hans 2021-12-16
Thank You for Your contribution.
I'm still confused, why the text command accept this syntax of loc after the 'Position' switch, but not as the first entry of the text command
Why does the first position require a cell variable
the second requires a vector
loc = {0.5;0.5}
figure
text(loc{:},'a')
clear
loc = [0.5 0.5]
figure
text('Position', loc, 'String','a');

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