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**General Calculator Help / Graphing looping lines in parametric mode**

« **on:**May 03, 2019, 01:26:40 pm »

I will post pictures in a couple hours, currently I do not have access to them.

I've been experimenting with the basic parametric graphing mode and am trying to write an equation that sets the x value back to the beginning when it reaches an edge.

Specifically, I am using this to try and graph a rudimentary satellite ground track.

Currently, I have it written so whenever it completes a period it will subtract the length of the whole window, resetting the x value to -180.

It is written as such:

X1T=((2CT/B)-(2C(int(T/B))-C

C = 180 (the distance from the origin to the edge)

B = the period

Essentially, the graph starts at x=-180 and whenever (T/B) returns an integer value (meaning enough time has passed to cover 2C, the entire window) it will subtract that integer value multiplied by the window and reset to x=-180.

This equation generally works, it gets the job done, but is there a better way to do this? Possibly a more general way with logic or combining equations? Perhaps a way that could be used to generate a flat torus window?

However, my biggest problem with this equation is that it produces annoying lines whenever the x position resets kind of like asymptotes in function mode when detectAsymptotes is disabled. I'm struggling to find a good way to fix this. My current solution is to graph with a dotted line but that requires a small and slow Tstep to look presentable.

TLDR: How can I prevent lines being graphed in parametric mode when graphing an equation that suddenly jumps to another position?

I've been experimenting with the basic parametric graphing mode and am trying to write an equation that sets the x value back to the beginning when it reaches an edge.

Specifically, I am using this to try and graph a rudimentary satellite ground track.

Currently, I have it written so whenever it completes a period it will subtract the length of the whole window, resetting the x value to -180.

It is written as such:

X1T=((2CT/B)-(2C(int(T/B))-C

C = 180 (the distance from the origin to the edge)

B = the period

Essentially, the graph starts at x=-180 and whenever (T/B) returns an integer value (meaning enough time has passed to cover 2C, the entire window) it will subtract that integer value multiplied by the window and reset to x=-180.

This equation generally works, it gets the job done, but is there a better way to do this? Possibly a more general way with logic or combining equations? Perhaps a way that could be used to generate a flat torus window?

However, my biggest problem with this equation is that it produces annoying lines whenever the x position resets kind of like asymptotes in function mode when detectAsymptotes is disabled. I'm struggling to find a good way to fix this. My current solution is to graph with a dotted line but that requires a small and slow Tstep to look presentable.

TLDR: How can I prevent lines being graphed in parametric mode when graphing an equation that suddenly jumps to another position?