| Author | Comment |
Vectris
Ultralisk
Posted: 24 Jan 2008
19:43 GMT
Total Posts: 375 | I found this interesting, in our Geometry class were learning how to take 4 given points, graph them, and then finding the slope and distance between points to prove what kind of parallelogram it is. Anyways I don't like messing with all the formulas so I go to STAT,EDIT and just plot the points, look at the graph, and write my answer (not on tests, just homework). Anyways I was graphing something and it was a rectangle, I saw on my friends paper he put square, he told me I was wrong and I looked at his formulas. He was right, the 4 points made a square yet on my calc it was clearly a rectangle
I then theorized that since a calc screen is 65x93 pixels, the graph stretched the points when I plotted them. I guess I took it for granted that the window automatically made it the right ratio.
Anyways, any know what I can put in for the window variables to make the graph even, thus letting me plot points and get a non-horizontaly-stretched image?
Anyways, I'm now making a program to plot the points normally and not stretched. If anyone has an answer tell me before I waste to much time on this program =P |
Xphoenix
Ultralisk
Posted: 24 Jan 2008
20:15 GMT
Total Posts: 210 | Um, no, the screen is 96 by 64. But you normally have access to 95 by 63. So this should make each pixel an increment of 1:
Xmin=0
Xmax=94
Ymin=0
Ymax=62
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~Xphoenix |
haveacalc
Guardian
Posted: 24 Jan 2008
21:47 GMT
Total Posts: 1111 | I normally have mine at Xmin=-11.75, Xmax=11.75, Ymin=-7.75, Ymax=7.75. That makes the window settings closest to the calc's ZStandard.
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-quoted directly from most movies that don't exist (and some that do). |
john777
Ultralisk
Posted: 25 Jan 2008
12:32 GMT
Total Posts: 289 | I know that zoom square makes perpendicular lines look square if they don't when you first graph them, would that apply here? |
Vectris
Ultralisk
Posted: 25 Jan 2008
15:18 GMT
Total Posts: 375 | idk ill have to try it, basically im saying that if u plot 4 points that are supposed to form a square, they appear horizontally stretched on a calculator
pheonix ur right i had the # of pixels wrong XD but no, each pixel does not equal a increment of one, u can tell by simply hitting graph, then when u move the cursor the coordinates do not increase/decrease by one, but by a decimal number. Why the calculators were made like this i dont know, it makes graphing hard especially in cases like this |
haveacalc
Guardian
Posted: 25 Jan 2008
19:38 GMT
Total Posts: 1111 | ΔX and ΔY are both equal to 1 in the window settings mentioned by Xphoenix.
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-quoted directly from most movies that don't exist (and some that do). |
gulyman
Goliath
Posted: 26 Jan 2008
12:09 GMT
Total Posts: 144 | @haveacalc
How do you get that triangle? |
Xphoenix
Ultralisk
Posted: 26 Jan 2008
13:26 GMT
Total Posts: 210 | ALT codes probably.
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~Xphoenix |
haveacalc
Guardian
Posted: 26 Jan 2008
14:15 GMT
Total Posts: 1111 | http://en.wikipedia.org/wiki/Delta_%28letter%29
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-quoted directly from most movies that don't exist (and some that do). |
