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## Topic review (newest first)

MathsIsFun
2006-01-20 08:29:05

The y-range for sin(x) is -1 to +1, so just scale it to suit.

yplot = 125 + sin(x)*25

Note: 125 = half-way between 100 and 150 = (100+150)/2

For the x-scale, it depends on you I suppose, but you could start with:

xplot = 125 + x*(25/360)

This will give x-values from -360 to +360, with x=0 at the center of the graph

If you want the sine to start at the lower left corner and go to the upper-right corner, then try:

xplot = 125 + x*(25/90)

Paul
2006-01-20 00:17:22

Hi

I am writing a computer progrom which plots a curve

I want to be able to input the start screen co-ordinated and the destination co-ordinates.

So for example. I may wish to start at 100,100 on the screen and end at 150,150. I want to plot a sine curve between these 2 points.

The formula I use to plot a sine curve is

x=x+1;