numpy - Match filtering in Python -

i'm trying simple match filtering operation on data set in python (so tried doing conjugation followed convolution). however, error message showing in convolution function saying object deep desired array. below code i'm using:

import numpy np  import cpickle import matplotlib.pyplot plt  open('meteor2.pkl', 'rb') f:          data = cpickle.load(f)       vlt = data['vlt']      mfilt=np.conjugate(vlt)      mfilt1=np.convolve(vlt,mfilt,mode='full')       #mfilt=np.conjugate(vlt)     #mfilt1=np.convolve(vlt,mfilt,'same')      r = data['r']      t = data['t']      codes = data['codes']      freqs = data['freqs']      ch0_db = 10*np.log10(np.abs(mfilt1[:, 0, :])**2)      plt.figure()      plt.imshow(ch0_db.t, vmin=0, origin='lower', cmap=plt.cm.coolwarm,aspect='auto')        plt.title('all pulses')      plt.figure()      plt.imshow(ch0_db[3::5, :].t, vmin=0, origin='lower', cmap=plt.cm.coolwarm,aspect='auto')     plt.title('minimum sidelobe coded-pulses')     plt.show() 

np.convolve one-dimensional convolution, in line:

mfilt1=np.convolve(vlt,mfilt,mode='full') 

you'll error if either vlt or mfilt not 1-d. example,

in [12]: x = np.array([[1,2,3]])  # x 2-d  in [13]: y = np.array([1,2,3])  in [14]: np.convolve(x, y, mode='full') --------------------------------------------------------------------------- valueerror                                traceback (most recent call last) <ipython-input-14-9bf37a14877a> in <module>() ----> 1 np.convolve(x, y, mode='full')  /home/warren/anaconda/lib/python2.7/site-packages/numpy/core/numeric.pyc in convolve(a, v, mode)     822         raise valueerror('v cannot empty')     823     mode = _mode_from_name(mode) --> 824     return multiarray.correlate(a, v[::-1], mode)     825      826 def outer(a,b):  valueerror: object deep desired array 

it looks want 2-d (or higher) convolution. scipy has few options:

• scipy.ndimage.convolve
• scipy.signal.convolve
• scipy.signal.convolve2d