Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I’m looking for an efficient way to convert axes coordinates to pixel coordinates for multiple screen resolutions.
For example if had a data set of values for temperature over time, something like:
int temps[] = {-8, -5, -4, 0, 1, 0, 3};
int times[] = {0, 12, 16, 30, 42, 50, 57};
What’s the most efficient way to transform the dataset to pixel coordinates so I could draw a graph on a 800×600 screen.
Assuming you’re going from
TEMP_MINtoTEMP_MAX, just do:where
#define Y_MAX (600). Similarly for the x-coordinate. This isn’t tested, so you may need to modify it slightly to deal with the edge-case (temps[i] == TEMP_MAX) properly.