Generate a circle in FORTRAN having polar coordinates

[sharmaN]

Say "I have grid in polar coordinates (r, theta). How do I plot it in tecplot. Tecplot plots it in cartesian coordinates."

 

[anorlunda]

I don't understand. To make a X-Y grid, loop on X and loop on Y. To make a r-θ grid, loop on r and loop on θ.

Perhaps you want to make a rectangular grid within a circle?

 

[DrClaude]

Is this a question about Fortran or about Tecplot?

 

[sharmaN]

I don't understand. To make a X-Y grid, loop on X and loop on Y. To make a r-θ grid, loop on r and loop on θ.

Perhaps you want to make a rectangular grid within a circle?

Is this a question about Fortran or about Tecplot?

About Techplot.

 

[sharmaN]

Ifound in tecplot to plot in polar coordinates, need to select polar line. Thanks

 

[RPinPA]

FYI, in any language, if you let $\theta$ go from 0 to $2\pi$ then the points with cartesian coordinates $x = r \cos(\theta), y = r \sin(\theta)$ will be spaced around the circle of radius $r$.

 

[sharmaN]

FYI, in any language, if you let $\theta$ go from 0 to $2\pi$ then the points with cartesian coordinates $x = r \cos(\theta), y = r \sin(\theta)$ will be spaced around the circle of radius $r$.

Yes thank you, I have the grid. Was facing problem in plotting it.