Contour Demo

Source: contour_demo.f90

Comprehensive contour plotting examples: line contours, filled contours, custom levels, colormaps.

Files

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

Running

make example ARGS="contour_demo"

Output

Contour Filled

ASCII output:

                          Filled Contour Demo (plasma)
+--------------------------------------------------------------------------------+
|                                                                                |
| |:::::::::=====ooooo*********####************####*********ooooo=====:::::::::= |
| 2:::::::====oooo*******###**************************###*******oooo====:::::::: |
| |::::====oooo******#********ooooooo========ooooooo********#******oooo====::::: |
| |::====ooo******##*****ooooo=====::::::::::::=====ooooo*****##******ooo====::: |
| |====ooo*****##*****oo===::::....................::::===oo*****##*****ooo====: |
| |===ooo*****#*****oo==:::............................:::==oo*****#*****ooo==== |
| 1=ooo*****#****ooo==::.............::::::::.............::==ooo****#*****ooo== |
| |ooo****##****oo==::..........:::============:::..........::==oo****##****ooo= |
| |oo****#****ooo=:::.......::==oo***########***oo==::.......:::=ooo****#****ooo |
| |o*****#****oo==::......::==oo*###%%%%%%%%%%###*oo==::......::==oo****#*****oo |
| |o****#****oo==::......::=oo*##%%@@@@@%%@@@@@%%##*oo=::......::==oo****#****oo |
| |*****#****oo=::......::=oo*##%%@@@%%%##%%%@@@%%##*oo=::......::=oo****#*****o |
| 0*****#***oo==::......::=o**#%%@@@%%#*oo*#%%@@@%%#**o=::......::==oo***#*****o |
| |*****#****oo=::......::=oo*##%%@@@%%%##%%%@@@%%##*oo=::......::=oo****#*****o |
| |o****#****oo==::......::=oo*##%%@@@@@%%@@@@@%%##*oo=::......::==oo****#****oo |
| |o*****#****oo==::......::==oo*###%%%%%%%%%%###*oo==::......::==oo****#*****oo |
| |oo****#****ooo=:::.......::==oo***########***oo==::.......:::=ooo****#****ooo |
| -1oo****##****oo==::..........:::============:::..........::==oo****##****ooo= |
| |=ooo*****#****ooo==::.............::::::::.............::==ooo****#*****ooo== |
| |===ooo*****#*****oo==:::............................:::==oo*****#*****ooo==== |
| |====ooo*****##*****oo===::::....................::::===oo*****##*****ooo====: |
| |::====ooo******##*****ooooo=====::::::::::::=====ooooo*****##******ooo====::: |
| -2:::====oooo******#********ooooooo========ooooooo********#******oooo====::::: |
| |:::::::====oooo*******###**************************###*******oooo====:::::::: |
| +-----------+------------+------------+------------+------------+------------+ |
| -3        -2           -1             0            1            2           3  |
+--------------------------------------------------------------------------------+
                                       x
y

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Contour Gaussian

ASCII output:

                              2D Gaussian Function
+--------------------------------------------------------------------------------+
| 3                                                                              |
| |                                                                              |
| |                                                                              |
| |                                                                              |
| 2                                                                              |
| |                                                                              |
| |                                                                              |
| |                                                                              |
| |                                                                              |
| 1                             ooooooooooooooooo                                |
| |                         oooo   ###########   oooo                            |
| |                       ooo ##################### ooo                          |
| |                     oo  #######===========#######  oo                        |
| |                    oo  ## ##===@@@@@@@@@@@===## ##  oo                       |
| 0                   oo  #  # ==@@  @@@@@@@  @@== #  #  oo                      |
| |                   o   #  # = @  @       @  @ = #  #   o                      |
| |                   oo  #  # ==@@  @@@@@@@  @@== #  #  oo                      |
| |                    oo  ## ##===@@@@@@@@@@@===## ##  oo                       |
| |                     oo  #######===========#######  oo                        |
| -1                      ooo ##################### ooo                          |
| |                         oooo   ###########   oooo                            |
| |                             ooooooooooooooooo                                |
| |                                                                              |
| |                                                                              |
| -2                                                                             |
| |                                                                              |
| |                                                                              |
| |                                                                              |
| +-----------+------------+------------+------------+------------+------------+ |
| -3        -2           -1             0            1            2           3  |
+--------------------------------------------------------------------------------+
                                       x
y

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Mixed Plot

ASCII output:

                           Mixed Plot: Contour + Line
+--------------------------------------------------------------------------------+
| 3                                                                              |
| |   #    o                                                         o    #    - |
| |-- #### ooooo                                                 ooooo #### ---  |
| |  --- ####  ooooo                                         ooooo  #### ---  @@ |
| 2@@@ ---   ####   ooooo                               ooooo   ####  ---- @@@   |
| |@  @@  ----  #####    ooooooo                 ooooooo    #####  ---   @@  @@@ |
| |@@   @@    --    ####       ooooooooooooooooooo       ####    ---   @@   @@   |
| |  @@   @@@   ---     #####                       #####     ---   @@@   @@     |
| |    @@   @@@    ---       #######         #######       ---    @@@   @@       |
| 1      @@   @@@     ---           #########           ---     @@@   @@         |
| |       @@    @@@      ---                         ---      @@@    @@          |
| |        @@     @@       ---     --  - -  --     --        @@     @@           |
| |          @     @@         ----             ----         @@     @             |
| |           @      @     ---   ---         ---   ---     @      @              |
| 0           @      @@- -          ---   ---          - -@@      @              |
| | -  - -  - @- -  - @                ---                @ -  - -@ -  - -  -  - |
| |           @      @@             ---   ---             @@      @              |
| |           @      @           ---         ---           @      @              |
| |          @     @@         ----             ----         @@     @             |
| -1       @@     @@        --                     --        @@     @@           |
| |       @@    @@@      ---                         ---      @@@    @@          |
| |      @@   @@@     ---           #########           ---     @@@   @@         |
| |    @@   @@@    ---       #######         #######       ---    @@@   @@       |
| |  @@   @@@   ---     #####                       #####     ---   @@@   @@     |
| -2@   @@   ---    ####       ooooooooooooooooooo       ####    ---   @@   @@   |
| |@  @@   ---  #####    ooooooo                 ooooooo    #####  ---   @@  @@@ |
| |@@@ ----  ####   ooooo                               ooooo   ####  ---- @@@   |
| |  --- ####  ooooo                                         ooooo  #### ---  @@ |
| +---####-ooooo-----------+------------+------------+-----------ooooo-####----+ |
| -3        -2           -1             0            1            2           3  |
+--------------------------------------------------------------------------------+
                                       x
y

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Ripple Coolwarm

ASCII output:

                      Ripple Function - Coolwarm Colormap
+--------------------------------------------------------------------------------+
| 2.0                                                                            |
| |**##########**************oooooooooooooooooooooooo**************##########*** |
| 1.5####**********oooooo========::::::::::::::::========oooooo**********####### |
| |##**********oooo====::::::::::................::::::::::====oooo**********### |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| 1.0****oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |**oooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| 0.5==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |====::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| 0.0::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| -0.5=::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |oo==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| -1.0ooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |******oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| -1.5*********oooo====::::::::::................::::::::::====oooo**********### |
| |######**********oooooo========::::::::::::::::========oooooo**********####### |
| +--------+---------+--------+---------+---------+---------+--------+---------+ |
| -2.0  -1.5      -1.0     -0.5        0.0       0.5       1.0      1.5     2.0  |
+--------------------------------------------------------------------------------+
                                       x
y

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Ripple Inferno

ASCII output:

                       Ripple Function - Inferno Colormap
+--------------------------------------------------------------------------------+
| 2.0                                                                            |
| |**##########**************oooooooooooooooooooooooo**************##########*** |
| 1.5####**********oooooo========::::::::::::::::========oooooo**********####### |
| |##**********oooo====::::::::::................::::::::::====oooo**********### |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| 1.0****oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |**oooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| 0.5==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |====::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| 0.0::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| -0.5=::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |oo==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| -1.0ooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |******oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| -1.5*********oooo====::::::::::................::::::::::====oooo**********### |
| |######**********oooooo========::::::::::::::::========oooooo**********####### |
| +--------+---------+--------+---------+---------+---------+--------+---------+ |
| -2.0  -1.5      -1.0     -0.5        0.0       0.5       1.0      1.5     2.0  |
+--------------------------------------------------------------------------------+
                                       x
y

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Ripple Jet

ASCII output:

                         Ripple Function - Jet Colormap
+--------------------------------------------------------------------------------+
| 2.0                                                                            |
| |**##########**************oooooooooooooooooooooooo**************##########*** |
| 1.5####**********oooooo========::::::::::::::::========oooooo**********####### |
| |##**********oooo====::::::::::................::::::::::====oooo**********### |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| 1.0****oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |**oooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| 0.5==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |====::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| 0.0::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%@@@@%%%%##****##%%%%@@@@%%##****oo==::::....::::==o |
| |==::::....::::==oo****##%%%%@@@@%%%%%%%%%%%%@@@@%%%%##****oo==::::....::::==o |
| -0.5=::::....::::==oo****##%%%%@@@@@@@@@@@@@@@@%%%%##****oo==::::....::::====o |
| |oo==::::......::::==oo******##%%%%%%%%%%%%%%%%##******oo==::::......::::==oo* |
| |oooo==::::......::::====oo************************oo====::::......::::==oooo* |
| -1.0ooo==::::::......::::::====oooooooooooooooo====::::::......::::::==oooo*** |
| |******oo====::::::........::::::::::::::::::::::::........::::::====oo******* |
| |********oo====::::::..........::::::::::::::::..........::::::====oo********# |
| -1.5*********oooo====::::::::::................::::::::::====oooo**********### |
| |######**********oooooo========::::::::::::::::========oooooo**********####### |
| +--------+---------+--------+---------+---------+---------+--------+---------+ |
| -2.0  -1.5      -1.0     -0.5        0.0       0.5       1.0      1.5     2.0  |
+--------------------------------------------------------------------------------+
                                       x
y

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