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How to plot this graph at MATLAB

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kseng2002

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plot graph in matlab

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How do i plot this type of graph at MATLAB ? Pls advice !!!!! Thx in advance ~~~ Urgent !

There in no equation for this graph, only got x,y value. Pls advice how to plot !!!!!!!!!!!
 

matlab plot graph

i think u can draw some equation from there using the equation of a line between two points(sory for my english) this is something like that:

(x-x1)/(x2-x1)=(y-y1)/(y2-y1)

for example for RED function :
between 0MHz and ~1.8MHz ==> y=45
---
i think with this u will have a starting point
 

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    kseng2002

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how to plot graph in matlab

Thx for your suggestion :!: After get the starting point, how to continue for the rest of the line :?: Pls advice, thanks in advance !
 

how to plot a graph in matlab

between 1.8Mhz and ~~~2.5Mhz u will have ~this eq:
(x-1.8Mhz)/(2.5MHz-1.8Mhz)=(y-38)/(15-38)
and result is y=f(x) this is for red one
....
 

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