Pltext3.m

function pltext3(x,y,fontsize,txt)
% plot text at specified position; paired function with setylim2.m
% D Meko 10-17-94
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%******************************** IN ARGS *******
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% x (1 x 1)r   start text this far from the far left of the x axis,
%	where this far is given as decimal fraction of total 
%	range covered by x axis
% y (1 x 1)r   likewise for y-axis value at which text is to begin;
% fontsize (1 x 1)i size of font
% txt (1 x ?)s   text
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%**********************  OUT ARGS -- NONE   ************
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%*********************  USER-WRITTEN FUNCTIONS NEEDED -- NONE ****
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%*********  NOTES ******************************************
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% Example
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% pltext2(.1,.5,8,'This')
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% Says plot the text string 'This' 0.1 of the way from the left 
% xlimit and half (0.5) of the way up y axis  Use font size of 8.
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% The text is centered vertically on the calculated y position


a = axis; % get current axis limits
xpos = a(1) + x*(a(2)-a(1));
ypos = a(3) + y*(a(4)-a(3)); %    yup + y*(a(4)-yup);
text(xpos,ypos,txt,'FontSize',fontsize)