On 2016-10-03 17:48, chrischris201...@gmail.com wrote:
Τη Δευτέρα, 3 Οκτωβρίου 2016 - 7:17:03 μ.μ. UTC+3, ο χρήστης
chrischr...@gmail.com έγραψε:
hello
i try to follow some tutorial but i have that error :
Traceback (most recent call last):
File "C:\Python27\test\test\earth.py", line 42, in <module>
slope_array = np.ones_like(data_array) * nodataval
TypeError: unsupported operand type(s) for *: 'int' and 'NoneType'
[snip]
#Show the visualization
plt.axis('off')
plt.title("Slope (degrees)")
plt.show()
plt.close()
yes you are correct i solution this error but now i have another error in the
line :color_bounds = list(range(-3, math.ceil(np.amax(slope_array)), 1))
error massage :
Traceback (most recent call last):
File "C:\Python27\test\test\earth.py", line 95, in <module>
color_bounds = list(range(-3, math.ceil(np.amax(slope_array)), 1))
TypeError: range() integer end argument expected, got float.
any idea ?
Look at the help for math.ceil:
>>> help(math.ceil)
Help on built-in function ceil in module math:
"""
ceil(...)
ceil(x)
Return the ceiling of x as a float.
This is the smallest integral value >= x.
"""
It returns an integer value, but as a _float_.
'range' expects an int, not a float, so you'll need to convert the float
to an int:
color_bounds = list(range(-3, int(math.ceil(np.amax(slope_array))), 1))
Did you copy the code straight from the tutorial?
You're using Python 2.7, but for which version of Python was the
tutorial written? Python 2 or Python 3?
If it was written for Python 3 and you're using Python 2, that might
explain why the code isn't working for you. (In Python 2, math.ceil
returns a float, whereas in Python 3 it returns an int.)
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