I'm not familiar with numarray, but google told me that their homepage says that you should be using numpy instead ( http://www.stsci.edu/resources/software_hardware/numarray/numarray.html) including a pdf guide to converting ( http://www.stsci.edu/resources/software_hardware/numarray/numarray2numpy.pdf ).
The docs for numarray are still available though, and it looks like numarray has a tostring() method, but I'm not sure what you're wanting your output to look like exactly, but you might want to look at the tolist() method. There's also a tofile() method, but that writes out the array as binary data, and it looks like you're wanting strings. Anyway, all of these methods are documented on this page: http://stsdas.stsci.edu/numarray/numarray-1.5.html/node39.html <http://stsdas.stsci.edu/numarray/numarray-1.5.html/node39.html>Hope that helps, good luck! Ryan A On Thu, Mar 11, 2010 at 8:53 AM, <[email protected]> wrote: > Hello, > I am new to this group. May I post a code-related question here? If so, > here it goes. > > I am in the process of importing and reading data, reshaping the data to be > a 2D array, adding a header file on top (of the new 2D array), and writing a > new file. I do this in a loop for many files. I'm using python 2.5 since > that is the version distributed with ArcGIS, a software that interfaces with > python 2.5. However, I receive the following error when I attempt to write a > data matrix created with NumArray. I just reviewed my two sources on > Numarray, and I can't figure out why I can't write the data. Below is the > code and below the code is the error message. > > I'm not sure how to write NumArray lines ot a .txt file (see the the last > lines of code). > > CODE STARTS HERE: > > from __future__ import with_statement > > import arcgisscripting, sys, os, string, copy, glob,numarray > > # Create the Geoprocessor Object > gp = arcgisscripting.create() > > > ############## > #DIRECTORIES > ############## > > workDIR = "C:\\PDSIwork" > resampleDIR = workDIR + "\\resample\\" > ascDIR = workDIR + "\\PDSIdata\\" > > ############## > #HEADER > ############## > > header = """\ > ncols 1386 > nrows 595 > xllcorner -124.7292 > yllcorner 24.6024 > cellsize 0.0417 > NODATA_value -9999 > """ > > ############################# > #GET RUNLIST AND IMPORT DATA > ############################## > > data=[] > os.chdir(ascDIR) > runlist=os.listdir(ascDIR) > #print runlist > for filex in runlist: > x=open(filex,'r') > for i in xrange(824670): > z=x.readline() > z=float(z) > data.append(z) > print filex > > ############# > #RESHAPE DATA > ############# > > data2 = numarray.array(data) > data3 = numarray.reshape(data2, 595,1386) > data4=numarray.transpose(data3) > print len(data4) > > ########################## > #RENAME DATA FOR WRITING > ######################### > > os.chdir(resampleDIR) > h=filex.replace( '.', '_' ) > outfilename=h+'.txt' > > ################################### > #WRITE NEW DATA WITH HEADER ON TOP > ################################### > > > #try: > with open(outfilename,'w') as outfile: > outfile.write(header) > for line in data4: > line.replace('[',' ').replace(']',' ') > outfile.write(line) > > > > --------------------------- > Here's the error message: > --------------------------- > > Traceback (most recent call last): File > "C:/PDSIwork/PYTHON_SCRIPTS/RESAMPLER2b.py", line 74, in <module> > line.replace('[',' ').replace(']', ' ') > AttributeError: 'NumArray' object has no attribute 'replace' > > Thank you, > Heather > > _______________________________________________ > Portland mailing list > [email protected] > http://mail.python.org/mailman/listinfo/portland > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/portland/attachments/20100311/f3d205a4/attachment.html> _______________________________________________ Portland mailing list [email protected] http://mail.python.org/mailman/listinfo/portland
