[Numpy-discussion] Read array from file
Dimitrios Kiousis
dkiousis@gmail....
Fri Mar 14 05:12:48 CDT 2008
Hello python users,
I have an input file consisting of string-lines and float-lines. This is how
it looks:
# vtk DataFile Version 3.0
VTK file exported from FEAP
ASCII
DATASET UNSTRUCTURED_GRID
POINTS 6935 FLOAT
15.44261 12.05814 54.43124
15.54899 12.00075 53.85503
15.95802 11.92959 53.88939
15.84085 12.00235 54.43274
15.53889 11.16645 54.51649
15.57673 11.10806 53.96009
16.10059 11.06809 53.87672
16.04238 11.11615 54.47454
15.78142 11.82206 53.33932
16.13055 11.75515 53.37313
.................
I want to read the first 5 string lines, and then store the float data
(coordinates) into an array.
It took me some time to figure this out but this is the script with which I
came out:
# Read and write the first information lines
for i in range(0,5):
Fdif.write( Fpst.readline() )
# Read and write coordinates
# --------------------------
# Initialization
coords = zeros( (nnod,3), float )
for i in range(0,nnod):
# Read line
x = Fref.readline() # Read lines
x = x.split() # Split line to strings
x = map ( float,x ) # Convert string elements to floats
x = array ( x ) # Make an array
for j in range (0,3):
coords[i,j] = x[j]
It seems quite complicated to me, but I haven't figure any nicer way. Could
you tell me if what I am doing looks reasonanble or if there are any other
solutions?
Do I really need to initiallize coords?
Thanks in advance,
Dimitrios
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