Global vs. Local
A local scale such as an urban neighborhood. Geographers tend to see unique features. At a global scale encompassing the entire world, geographers tend to see broad patterns.
Variables have either global or local scope. A global variable exists only once in a script, and is visible in every function. Modifications to it in one function are permanent and visible to all functions. Unless declared otherwise, all variables in a script are global.
Helpful for studying:
coordinate systems other than the global coordinate system. you can specify restraints and loads in any desired direction. Example: defining a force on a cylindrical face, you can apply it in the radial, circumferential or axial directions. similarly if you choose a spherical face, you can choose the radial, longitude, or latitude directions. in addition, you can use reference planes and axes.
Variables have either global or local scope. A global variable exists only once in a script, and is visible in every function. Modifications to it in one function are permanent and visible to all functions. Unless declared otherwise, all variables in a script are global.
Helpful for studying:
coordinate systems other than the global coordinate system. you can specify restraints and loads in any desired direction. Example: defining a force on a cylindrical face, you can apply it in the radial, circumferential or axial directions. similarly if you choose a spherical face, you can choose the radial, longitude, or latitude directions. in addition, you can use reference planes and axes.
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