how to make speedometer in graphics

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Krishnendu Mukherjee
i have to make a speedometer in gui,as like we see in vechile.how can i do that? if i drag a axes an put it on gui editer.then set a call back function.will it be possible? if possible then what should be the callback function?
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Krishnendu Mukherjee
Krishnendu Mukherjee 2012-3-9
i have a matrix having different values of the speed.this values will be shown on the speedometer,
suppose:
v=[10 12 13 13.4 14............]rpm
time interval is .ooo1 sec.
i hv to show those values on the speedometer.
any body plz help.
Krishnendu Mukherjee
Krishnendu Mukherjee 2012-3-12
by the way i hv an idea,though i hvnt use graphics in matlab before,by the way,i think if i open an image of speedometer an supperimpose the niddle on different angle on it according to the given speed.is it possible?

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回答（1 个）

Walter Roberson
Walter Roberson 2012-3-9
There is no callback function of an axes object that would be relevant to this question.
You will encounter non-trivial difficulties in attempting to process anything with an interval as low as 0.0001 seconds (1/10000 of a second).
Your graphics display is likely not any faster than 120 frames per second; there is no point in trying to update it 83 times faster than that.
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Krishnendu Mukherjee
Krishnendu Mukherjee 2012-3-12
ok,its nt necessarily to be .0001 sec exactly.i hv just given an example.the interval may be allowed to be .1 sec.i need the program of that

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