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authorJulian T <julian@jtle.dk>2020-04-30 13:24:08 +0200
committerJulian T <julian@jtle.dk>2020-04-30 13:24:08 +0200
commit56f60d3409c035e12b1d7e21c14ff4f8ab43ecf9 (patch)
treeb321db0c4fc5407733178abbb95b0a3125b4bcce /sem4/hpp/miniproject/optimised.py
parent0f5844da5e872ac20ea145eaa682238ec8c99385 (diff)
Finished implementations and runner
Diffstat (limited to 'sem4/hpp/miniproject/optimised.py')
-rw-r--r--sem4/hpp/miniproject/optimised.py66
1 files changed, 35 insertions, 31 deletions
diff --git a/sem4/hpp/miniproject/optimised.py b/sem4/hpp/miniproject/optimised.py
index 2d128c9..299d25e 100644
--- a/sem4/hpp/miniproject/optimised.py
+++ b/sem4/hpp/miniproject/optimised.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
import numpy as np
import matplotlib.pyplot as plt
import time
@@ -8,33 +6,23 @@ import time
limitre = ( -2, 1 )
limitim = ( -1.5, 1.5 )
-def mangel(pre, pim, T, l):
+def numpyiota(grid, T, l, savez):
"""
- Calculate the mangelbrot image
- (pre, pim) discribes the image size. Use T and l to tune the mangelbrot
- This function uses the global variables limitre and limitim to determine
- the c-mesh range.
-
- :param pre: Number of real numbers used
- :param pim: Number of imaginary numbers
- :param T: Mangelbrot threshold
- :param l: Iterations
+ Calculates the ι using numpy arrays.
+ This works with both numpy.arrays and numpy.ndarrays
+ Also devides by l
+
+ :param grid: c-mesh. Shape will be used to make result
+ :param savez: Return z as the second element of returned tuple
"""
# Preallocate result array and z array
- rs = np.zeros((pre, pim))
- z = np.zeros((pre, pim))
-
- # Used to calculate c-mesh
- re = np.linspace(limitre[0], limitre[1], pre)
- im = np.linspace(limitim[0], limitim[1], pim)
-
- # Calculate c-mesh
- grid = np.add.outer(re, 1j * im)
+ rs = np.zeros(grid.shape)
+ z = np.zeros(grid.shape)
# Calculate ι for all complex numbers
for i in range(l):
# This will generate warnings for some of the values rising above T.
- # Because these values are above T they are not used, thus the warnings
+ # Because these values become NAN they are not used, thus the warnings
# can be ignored
z = z*z + grid
@@ -51,15 +39,31 @@ def mangel(pre, pim, T, l):
rs += below
rs /= l
-
- return rs
-if __name__ == "__main__":
- start = time.time()
- arr = mangel(500, 500, 2, 100)
- end = time.time()
+ if not savez:
+ z = None
+ return (rs, z)
- plt.imshow(arr, cmap=plt.cm.hot, vmin=0, vmax=1)
- plt.savefig("opt.png")
+def mangel(pre, pim, T, l, savez):
+ """
+ Calculate the mangelbrot image
+ (pre, pim) discribes the image size. Use T and l to tune the mangelbrot
+ This function uses the global variables limitre and limitim to determine
+ the c-mesh range.
+
+ :param pre: Number of real numbers used
+ :param pim: Number of imaginary numbers
+ :param T: Mangelbrot threshold
+ :param l: Iterations
+ :param savez: Return z as the second element of returned tuple
+ """
+
+ # Used to calculate c-mesh
+ re = np.linspace(limitre[0], limitre[1], pre)
+ im = np.linspace(limitim[0], limitim[1], pim)
+
+ # Calculate c-mesh
+ grid = np.add.outer(re, 1j * im)
- print(f"Took {end - start} seconds")
+ # Calculate ι
+ return numpyiota(grid, T, l, savez)