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POPopulating a table in PyQt with file attributes
 

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    <p>I'm trying to populate a QTableWidget with the attributes of a file opened elsewhere in the script. I've successfully set the file attributes read in from the file using the following code:</p> <pre><code>class FileHeader(object): fileheader_fields=( "filetype","fileversion","numframes", "framerate","resolution","numbeams", "samplerate","samplesperchannel","receivergain", "windowstart","winlengthsindex","reverse", "serialnumber","date","idstring","ID1","ID2", "ID3","ID4","framestart","frameend","timelapse", "recordInterval","radioseconds","frameinterval","userassigned") fileheader_formats=( 'S3','B','i4','i4','i4','i4','f','i4','i4','i4', 'i4','i4','i4','S32','S256','i4','i4','i4','i4', 'i4','i4','i4','i4','i4','i4','S136') IMAGE_HEADER_BYTES = 256 IMAGES_DATA_BYTES = 49152 def __init__(self,filename=''): self.filename = filename if filename: self.setFile(filename) else: # initialize our attributes to None for field in self.fileheader_fields: setattr(self,field,None) def setFile(self, f): self.infile=open(f, 'rb') dtype=dict(names=self.fileheader_fields, formats=self.fileheader_formats) self.fileheader=np.fromfile(self.infile, dtype=dtype, count=1) self.fileheader_length=self.infile.tell() for field in self.fileheader_fields: setattr(self,field,self.fileheader[field]) </code></pre> <p>I've used this code to populate the table but I keep getting a "FileHeader has no attribute fileheader" error.</p> <pre><code>from fileheader import FileHeader, Frame from echogram import QEchogram from PyQt4.QtGui import * from PyQt4.QtCore import * import os, sys class MainWindow(QWidget): def __init__(self, parent=None): self.fileheader_fields=FileHeader.fileheader_fields self.fileheader_values=FileHeader.fileheader[field] self.fileheader={field: "value of" + field for field in self.fileheader_fields} super(MainWindow, self).__init__(parent) self.fileheader_table=QTableWidget() layout=QVBoxLayout() layout.addWidget(self.fileheader_table) self.setLayout(layout) self.populate def populate(self): self.fileheader_table.setRowCount(len(self.fileheader_fields)) self.fileheader_table.sestColumnCount(2) self.fileheader_table.setHorizontalHeaderLabels(['name','value']) for i,field in enumerate(self.fileheader_fields): name=QTableWidgetItem(field) value=QTableWidgetItem(self.fileheader[field]) self.fileheader_table.setItem(i,0,name) self.fileheader_table.setItem(i,1,value) if __name__=="__main__": app=QApplication(sys.argv) filename=str(QFileDialog.getOpenFileName(None,"open file","C:/vprice/DIDSON/DIDSON Data","*.ddf")) wnd=MainWindow() wnd.resize(640,480) wnd.show() #echoGram=QEchogram() #echoGram.initFromFile(filename) #fileName="test.png" #echoGram.processEchogram() #dataH=echoGram.data #print "Horizontal data", dataH </code></pre> <p>Bear with me-- I just started with all of the Python stuff about a month ago... </p>
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    1. USVictoria Price
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    1. COAdded code for your concrete case. Hope I understood logic right.
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    2. COOk, so I'm getting it to run, except that it seems to be unable to populate from a numpy array... I'm getting an "unexpected argument type" error?
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    3. COWhere this error happens, when creating ``QTableWidgetItem``? If so, try to convert data to string/unicode ``value = QtGui.QTableWidgetItem(unicode(self.fileheader[field]))``
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