define a function like python

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bahar vojdani
bahar vojdani 2022-2-17
评论： Walter Roberson 2022-5-5
Hello all,
I have a fuction in python but I want to write like this in Matlab.
def link_to_grasshopper(x):
# x is a numpy array
# part 1: from jupyter to GH
df = pd.DataFrame(remap(x))
df.to_csv('X.csv')
# wait pls
sleep(120.0)
# part 2: from GH back to jupyter
f = pd.read_csv('Fitness.csv')
return f.values[0][0]
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bahar vojdani
bahar vojdani 2022-2-18
Thanks for helping All in all I wanted to write a function gives some parameters,and creat csv file with parameters and after simulation in other software(sleep time) read file csv an return value of csv file
Image Analyst
Image Analyst 2022-2-18
So did you take what I gave below and try to continue with it? If not, why not? Let's see your latest version of it.

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回答（1 个）

Image Analyst
Image Analyst 2022-2-17
Perhaps something like this:
function data = ReadGrasshopperFile(x, fileName1, fileName2)
% x is a numpy array
% part 1: from jupyter to GH
df = pd.DataFrame(remap(x))
% Write to CSV file
writematrix(df, fileName1);
% wait pls
sleep(120.0)
% part 2: from GH back to jupyter
data = readmatrix(fileName);
end
Or maybe at least it's a start, since I'm not really sure what all those things in your Python code are.
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bahar vojdani
bahar vojdani 2022-5-5
@Image Analyst
hello dear,
I have a python script, but I want to rewrite that in Matlab. Indeed, in python, I used the os module to help me interact with the operating system. 'os.path.getmtime(path)' Return the time of the last modification of the path.
def cost(x):
df1 = pd.DataFrame(x)
fileName = 'output.csv'
originalTime = os.path.getmtime(fileName)
df1.to_csv('inputs.csv')
while(True):
if(os.path.getmtime(fileName) > originalTime):
break
df2 = pd.read_csv('output.csv',memory_map=True)
d = []
for i,j in zip(df1.itertuples(),df2.iteritems()):
t = deepcopy(list(j[1]))
h = deepcopy(list(i))
h.pop(0)
results.loc[len(results.index)] = h + t
t[0] *= -1
d.append(t)
return d
Walter Roberson
Walter Roberson 2022-5-5
https://www.mathworks.com/matlabcentral/answers/9957-using-net-filesystemwatcher-to-listen-for-new-files#answer_13710

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