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Read data and make (x,y) coordinates from data

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Nora
Nora 2013-10-25
评论： Walter Roberson 2013-10-27
There is this data file that has the format where there is a letter x, space, then the x value, letter y, space, then the y value.
x 0 y 1
x 1.3 y 2.2
... (continued)
how can I write a script that will makes these x and y values into points and then plot them.
finally, it should close the file and say if it was closed successfully or not.
This is what I have so far:
load hw92.dat
FID = fopen(file, 'r');
if FID == -1
fprintf('ERROR CANNOT OPEN FILE TO READ!');
else
% I am not sure how to do make the (x,y) part
fclose(file);
end
Not sure how to do the rest of it.

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Walter Roberson
Walter Roberson 2013-10-25
datacell = textscan(FID, 'x%fy%f', 'CollectData', 1);
xycoords = datacell{1};
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Nora
Nora 2013-10-27
x 0 y 1
x 1.3 y 2.2
x 2.2 y 6
x 3.4 y 7.4
x 4.2 y 5.5
x 4.4 y 4.5
x 6.2 y 7.8
x 7.7 y 11.1
x 8.2 y 11.5
x 9.9 y 15.2
x 7.2 y 9.5
x 8.9 y 12.5
Walter Roberson
Walter Roberson 2013-10-27
Okay, and after you use the code that you posted, what does the variable xycoords contain?

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