Writing a web GUI for gnuplot
This final recipe will teach you how to make your own interactive web application that uses gnuplot to draw a graph in response to user input. It is not a general-purpose GUI for gnuplot as was the subject of the previous recipe, but rather shows one way to use gnuplot as part of a special-purpose web application. Because gnuplot can be controlled through text commands and can create PNG files, which are size-efficient and well supported by current web browsers, it is very well suited to this type of project.
We are going to create a simple game that asks the user to hit a target with a cannonball. The player enters two numbers, the initial speed of the projectile and the angle of the cannon. After clicking on a button ...
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