Streamplot Demo

Streamplot Demo

Source: streamplot_demo.f90

Streamplots for 2D vector fields.

Files

  • streamplot_demo.f90 - Source code
  • Generated media in output/example/fortran/streamplot_demo/

Running

make example ARGS="streamplot_demo"

Output

Streamplot Arrows

streamplot_arrows.png

ASCII output:



                       Streamline Plot Demo - With Arrows
+--------------------------------------------------------------------------------+
| 2.0                                                                            |
| |     \              >         >           >            >            /         |
| |      \ ⣀⠤⠂    ⢀⡠⠔   ⣀⡠⠤⠔⠂ ⣀⡠⠤⠤⠤⠤⠤⠔⠒⠂     ⠒⠒⠤⠤⠤⣀⣀ ⠐⠢⠤⢄⣀   ⠒⠤⣀     /           |
| |     ⢀⠤⠊ \ ⢀⡠⠔⠊⠁⢀⡠⠔⠊⠉⣀⡠⠤⠒⠊⠉ ⣀⠤⠔⠒⠒⠒⠒⠒⠉⠉⠉⠑⠒⠒⠒⠒⠒⠢⠤⠄ ⠉⠉⠒⠢⠤⣀⡉⠑⠒⠤⣀ ⠉⠒⠤⡀   ⠑⠤⡀       |
| 1.5   ⠁  ⢀⠔⠊⠁   ⠈⢁⡠⠔⠊⠉        ⣀⣀⣀⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⢄⣀⣀⡀        ⠈⠑⠒⠤⣀⠑⠢⢄ ⠈⠑⠢⡀  ⠈⠢⢄     |
| |      ⡠⠊⠁    ⣀⠔⠊⠁     ⢀⣀⠤⠔⠊⠉⠉   ⣀⣀⣀⣀⣀⣀⣀⣀⣀⣀⣀⡀  ⠈⠉⠑⠒⠤⢄⡀       ⠑⠢⡀    ⠈⠑⢄   ⠁    |
| |    ⡠⠊  ⡠⠊⢀⠤⠊      ⢀⠤⠊⠁  ⣀⡠⠔⠒⠊⠉⠉           ⠈⠉⠉⠒⠒⠤⣀⡀ ⠈⠉⠒⠤⣀  ⠐⠤⡀⠈⠒⢄     ⠑⢄      |
| 1.0⠠⠊  ⡠⠊⢀⠔⠁     ⢀⠔⠊⠁ ⣀⠤⠒⠉    ⢀⣀⣀⠤⠤⠔⠒⠒⠒⠒⠒⠒⠒⠤⠤⢄⣀⡀   ⠈⠑⠒⠤⣀  ⠉⠢⢄ ⠈⠒⢄ ⠉⠢⡀⠑⢄  ⠑⠄    |
| |   \⢠⠊ ⡔⠁     ⡠⠊⠁ ⢀⠤⠊    ⢀⠤⠒⠉⠁   ⣀⣀⠤⠤⠤⠤⠤⣀⣀⣀⣀  ⠈⠑⠒⠤⣀    ⠉⠢⡀  ⠑⢄  ⠱⡀ ⠈⠢⡀⠱⡀      |
| |   ⡰⠁⢠⠊     ⢠⠊  ⢀⠔⠁   ⣀⠤⠊⠁ ⢀⡠⠔⠒⠉⠉   ⢀⣀⣀⣀⣀   ⠉⠒⠢⠤⣀  ⠉⠢⡀   ⠈⠢⢄  ⠑⢄ ⠈   ⠑⡄⠈⢆     |
| |  ⠐⠁⢠⠃     ⡔⠁ ⢀⠔⠁   ⡠⠊  ⢀⠔⠊⠁ > ⠤⠒⠉⠉⠉⠁    ⠉⠉⠒⠢⠤⣀  ⠑⠢⡀ ⠈⠒⢄    ⠁  ⠈⢆     ⠘⡄⠈⠂    |
| 0.5 ⢠⠃ ⡄  ⢀⠎  ⢠⠊   ⢠⠊  ⡠⠒⠁      ⢀⡠⠔⠊⠉⠉⠉⠉⠉⠒⠒⠒⠤⡀  ⠑⠢  ⠈⠢⡀  ⠣⡀    ⡀ ⠈⢆   ⢆ ⠱⡀     |
| |   ⡇ ⢰⠁  ⡜  ⢠⠃   ⢠⠃  ⡰⠁     ⢀⠔⠊⠁    ⣀⣀⣀⡀     ⠐⠤⡀  ⢠  ⠈⢆  ⠑⡄   ⠱⡀ ⠈⢆  ⠈⡆ ⢣     |
| |  ⠸v ⡜  ⢠⠃  ⡜    ⡜  ⢠⠃v ⡔⠁ ⢠⠃    ⡔⠊⠉   ⠈⠉⠒⠤⡀   ⠱⡀  ⢇  ⠈⡆  ⠸⡀   ⢣  ⠘⡄  ⢱ ⠸⡀    |
| 0.0   ⡇  ⢸   ⡇   ⢰⠁  ⡜  ⢸   ⡇    ⡎  ⡠⠒⠉⠉⠑⢄  ⢱    ⢣  ⠘⡄  ⢸   ⡇   ⢸   ⡇  ⢸  ⠃    |
| |  ⢠  ⡇  ⢸   ⡇   ⢸   ⡇  ⠘⡄  ⡇    ⢇  ⠑⢄⣀⣀⡠⠊  ⡸    ⡸   ⡇  ⡸  ⢠⠃   ⢸   ⡇  ⢸       |
| |  ⠈⡆ ⢇  ⠸⡀  ⢣   ⠈⢆  ⠸⡀  ⢱  ⠘⢄    ⠑⢄⣀⣀<  ⣀⠤⠒⠁   ⡰⠁ ⢀⠜  ⢠⠃  ⢸    ⡜  ⢀⠇  ⡜  ⡆    |
| -0.5⢣ ⠸⡀  ⢣  ⠈⢆   ⠈⢆  ⠑⡄  ⠃   ⠑⢄      ⠉⠉⠉    ⢀⡠⠊      ⡠⠃  ⢠⠃   ⢠⠃  ⡜  ⢀⠇ ⢸     |
| |   ⠈⢆ ⠱   ⢣  ⠈⢆   ⠈⢢  ⠈⢆       ⠉⠒⠤⠤⣀⣀⣀⣀⣀⠤⠤⠒⠊⠁      ⢀⠔⠁  ⡠⠃   ⡠⠃  ⠘   ⠘ ⢠⠃     |
| |    ⠘⡄     ⠣⡀ ⠈⠢⡀   ⠑⢄  ⠉⠢⢄⡀    ⠤⣀⣀    ⢀⣀⣀⣀⠤⠒<  ⣀⠤⠒⠁  ⡠⠊   ⢀⠔⠁     ⡀  ⢠⠃⢀⠄    |
| |     ⠘⢄     ⠑⢄  ⠈⢆    ⠑⠢⣀       ⣀⡀ ⠉⠉⠉⠉⠁  ⢀⣀⡠⠤⠒⠉  ⣀⠤⠒⠉   ⢀⠔⠁  ⡠⠂ ⢀⠜  ⡠⠃⢀⠎     |
| -1.0⢀  ⠈⠢⡀    ⠈⠢⣀  ⠑⠢⣀    ⠉⠒⠤⢄⡀   ⠈⠉⠑⠒⠒⠒⠒⠊⠉⠁   ⣀⠤⠒⠉     ⡠⠒⠁  ⡠⠊\ ⡰⠁ ⢀⠜ ⡠⠃      |
| |    ⠑⢄  ⠈⠢⣀  ⠠⡀ ⠑⠢⢄  ⠉⠒⠤⡀    ⠈⠉⠒⠂  ⠤⠤⠤⠤⠤⠤⠤⠒⠒⠉⠉     ⣀⠤⠒⠉  ⡠⠔⠊ ⢀⠔⠊ ⢀⠔⠁⡠⠊  ⡠⠂    |
| |      ⠑⢄   ⠑⠤⡀⠈⠢⣀  ⠑⠢⢄⡀     ⠠⠤⣀⣀⡀           ⣀⣀⡠⠤⠔⠊⠉   ⠠⠒⠉  ⠠⠊⠁ ⡠⠒⠁⡠⠊  ⡠⠊      |
| -1.5⠈⠢⢄  ⠉⠒⢄  ⠈   ⠉⠒⠤⢄⡀⠈⠁  < ⢀⡀  ⠈⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉         ⣀     ⢀⡠⠔⠉    ⢀⡠⠊        |
| |     ⡀⠑⢄   ⠉⠢⣀  ⠠⢄⡀  ⠈⠑⠢⠄    ⠈⠉⠑⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠊⢉⣀⣀⠤⠔⠒⠉  ⣀⡠⠔⠊⢁⡀   ⢀⡠⠔⠁  ⢀\      |
| |     ⠈⠒⢄⠑⠢⢄⡀  ⠉⠢⢄⡀⠈⠑⠢⢄⣀⡀ ⠒⠢⠤⠤⢄⣀⣀⣒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠊⠉⠉⠁  ⣀⡠⠤⠒⠊⠉⣀⡠⠔⠊⠁⢀⡠⠔⠊⠁   ⡠⠒⠁       |
| |        ⠉⠒⠄⠈⠑⠢   ⠈⠉⠒⠢⠄ ⠈⠉⠉⠒⠒⠤    ⠉⠉⠉⠉⠉ ⠠⠤⠔⠒⠒⠒⠒⠒⠊⠉ ⠠⠔⠒⠊⠉   ⠔⠊⠁    ⠠⠒⠉          |
| +--+-------+--------+--------+--------+--------+--------+--------+-------+---- |
| -2.0    -1.5     -1.0     -0.5       0.0      0.5      1.0      1.5     2.0    |
+--------------------------------------------------------------------------------+
                                       X
Y

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Streamplot Demo

streamplot_demo.png

ASCII output:



                      Streamline Plot Demo - Circular Flow
+--------------------------------------------------------------------------------+
| 2.0                                                                            |
| |                                                                              |
| |         ⢀⡠⠔     ⣀⠤⠔⠂      ⢀⣀⣀⠤⠤⠤⠒⠒⠒⠒⠒⠂ ⠐⠒⠢⠤⠤⠤⣀⣀⣀       ⠠⢄⣀      ⠤⣀           |
| |      ⢀⡠⠊⠁   ⣀⠤⠒⠉    ⣀⠤⠤⠒⠒⠉⠁  ⣀⣀⣀⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⢄⣀  ⠉⠉⠒⠢⠤⣀⡀   ⠉⠒⠤⡀    ⠉⠢⣀        |
| 1.5  ⣀⠔⠁   ⣀⠔⠉   ⢀⡠⠔⠒⠉       ⠉⠉                         ⠈⠉⠒⠤⡀  ⠈⠑⠢⡀    ⠑⢄      |
| |   ⠊    ⡠⠊   ⢀⠔⠊⠁           ⢀⣀⣀⠤⠤⠔⠒⠒⠒⠒⠒⠒⠒⠒⠤⠤⠤⣀⣀⡀           ⠈⠑⠢⣀  ⠈⠑⢄    ⠑⠄    |
| |      ⡠⠊   ⡠⠊⠁         ⢀⣀⠤⠒⠊⠁⢀⣀⣀⡠⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⣀⣀⡀ ⠈⠉⠑⠢⢄⡀          ⠑⢄   ⠉⠢⡀       |
| 1.0  ⡠⠊  ⢀⠔⠉         ⣀⠔⠊⠁    ⠉⠁      ⢀⣀⣀⣀⣀⡀   ⠈⠉     ⠈⠑⠢⢄⡀        ⠑⢄   ⠈⠢⡀     |
| |   ⠊  ⢀⠔⠁        ⢀⠤⠊        ⣀⠤⠒⠒⠉⠉⠉⠉⠁    ⠈⠉⠉⠒⠢⢄⣀⡀       ⠈⠑⢄        ⠑⡄   ⠑⠄    |
| |     ⢀⠎        ⡠⠒⠁      ⣀⠤⠒⠉   ⡀                ⠈⠑⠢⡀       ⠑⡄       ⠈⢢        |
| |    ⢀⠎       ⢠⠊      ⢀⡠⠊   ⣀⠤⠒⠉⣀⡠⠤⠔⠒⠒⠒⠒⠒⠒⠒⠢⠤⣀⡀     ⠈⠑⢄      ⠈⠢⡀       ⠱⡀      |
| 0.5  ⡎  ⡀    ⢠⠃ ⢀⠄   ⡰⠁  ⢀⠔⠉ ⡠⠔⠉ ⢀⡠⠤⠤⠤⠒⠢⠤⠤⠤⣀  ⠈⠑⢄      ⠑⢄   ⠠⡀ ⠘⡄    ⢠  ⢱      |
| |   ⡜  ⡜    ⢀⠇  ⡎   ⡰⠁     ⡠⠊  ⡠⠊⠁  ⢀⣀⣀⣀⣀⡀  ⠉⠒⢄  ⠉⢢      ⢣   ⢱  ⠸⡀   ⠈⡆  ⢣     |
| |  ⢰⠁  ⡇    ⡸  ⢸   ⢰⠁     ⡜  ⢠⠊  ⢀⠔⠊⠁    ⠈⠉⠢⡀  ⠱⡀  ⢣     ⠈⡆   ⡇  ⢇    ⢱  ⠈⡆    |
| 0.0   ⢠⠃    ⡇  ⡇   ⡇     ⢸   ⡎  ⢠⠃          ⠘⡄  ⢱  ⠈⡆     ⢸   ⢸  ⢸    ⠈⡆  ⡇    |
| |  ⢸  ⠸⡀    ⡇  ⢇   ⢇     ⢸   ⡇  ⠈⢆     ⠁    ⢠⠃  ⢸  ⢠⠃     ⡸   ⢸  ⢸    ⢠⠃  ⠁    |
| |  ⠸⡀  ⢇    ⠃  ⠸⡀  ⠸⡀  ⠠⡀    ⠘⢄  ⠈⠢⣀      ⣀⠤⠃  ⢠⠃  ⡎     ⢀⠇  ⢀⠇  ⢸    ⢸  ⢀⠇    |
| -0.5⢣  ⠸⡀       ⢣   ⠱⡀  ⠑⡄     ⠑⠤⣀   ⠉⠉⠉⠉⠉  ⣀⠤⠒⠁ ⡠⠜      ⡜   ⡸  ⢀⠇    ⡜  ⡜     |
| |    ⢇  ⠃ ⠈⢆     ⢣   ⠘⡄  ⠈⠢⣀      ⠉⠑⠂⠒⠤⠔⠒⠒⠒⠉ ⢀⣀⠤⠊ ⣀⠔⠁  ⡠⠊    ⠁ ⢠⠊    ⠈  ⡸      |
| |    ⠈⢆    ⠈⢢     ⠑⢄    ⢄   ⠑⠢⢄⡀    ⠠⠤⠤⠤⠤⠤⠤⠔⠊⠁⣀⠤⠒⠉  ⢀⠤⠒⠁      ⡰⠁       ⡰⠁      |
| |   ⠢⡀ ⠣⡀    ⠑⢄     ⠑⢄   ⠉⠢⢄⡀  ⠈⠉⠒⠂          ⠈   ⢀⡠⠔⠁       ⡠⠊        ⡰⠁       |
| -1.0 ⠑⢄ ⠘⢄     ⠱⡀     ⠉⠢⢄⣀  ⠈⠑⠒⠤⠤⢄⣀⣀     ⣀⣀⣀⣀⠤⠒⠒⠉⠁       ⣀⠔⠉        ⢀⠔⠁  ⡠     |
| |      ⠑⢄ ⠑⢄    ⠈⠒⢄⡀      ⠉⠒⠢⢄⣀⡀    ⠉⠉⠉⠉⠉      ⢀⣀     ⣀⠤⠊         ⣀⠔⠁  ⡠⠊      |
| |   ⠑⢄   ⠑⢄ ⠑⢄     ⠈⠑⠢⢄⣀       ⠈⠉⠉⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠊⠉⠉⠁⣀⣀⠤⠤⠒⠉         ⢀⡠⠊   ⡠⠊        |
| -1.5⢄ ⠑⢄   ⠑⠤⣀⠉⠢⢄⡀      ⠉⠒⠢⠤⣀⣀    ⠐⠒⠤⠤⠤⠤⠤⠔⠒⠒⠒⠒⠊⠉            ⢀⡠⠔⠁   ⡠⠊    ⡠     |
| |    ⠉⠢⡀⠑⠢⢄   ⠑⠢⢄⠈            ⠉⠁               ⣀⣀       ⣀⠤⠔⠊⠁   ⣀⠔⠉   ⢀⠔⠉      |
| |      ⠈⠑⢄⡀⠉⠢⢄   ⠉⠒⠤⢄⣀   ⠤⣀⡀  ⠉⠑⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠉⠉⠉  ⢀⣀⠤⠤⠒⠒⠉    ⣀⠤⠒⠉   ⢀⡠⠊⠁        |
| |         ⠈⠑⠢ ⠉⠒⠤     ⠉⠑⠒⠤ ⠈⠉⠑⠒⠒⠒⠤⠤    ⠤⠤⠤⠤⠤⠒⠒⠒⠉⠉⠁      ⠠⠔⠒⠉     ⠔⠊⠁           |
| +--+-------+--------+--------+--------+--------+--------+--------+-------+---- |
| -2.0    -1.5     -1.0     -0.5       0.0      0.5      1.0      1.5     2.0    |
+--------------------------------------------------------------------------------+
                                       X
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