This is exactly what my packedStruct macro is for... define the type (composed of bitstypes) and the macro will set up helper methods to read raw bytes into the fields. I'm curious if it suits your needs, and what is missing.
On Thu, Oct 1, 2015 at 3:39 PM, David McInnis <[email protected]> wrote: > Related follow-on question.. > > Is there a nice way to get the data into a type format rather than a > dict ? > > Here's the form I'm using now.. > function DNP(myfile::String) > > dnp = { "File" => myfile } > fh = open(myfile, "r") > > dnp["Label"] = bytestring(readbytes(fh, 4)) > dnp["Version"] = read(fh, Uint32) > dnp["Revision"] = read(fh, Uint32) > dnp["Date"] = bytestring(readbytes(fh, 28)) > dnp["FileFormat"] = read(fh, Uint32) > dnp["FileType"] = bytestring(readbytes(fh,4)) > dnp["OriginalFileName"] = bytestring(readbytes(fh,68)) > dnp["ReferenceFileName"] = bytestring(readbytes(fh,68)) > dnp["RelatedFileNameA"] = bytestring(readbytes(fh,68)) > dnp["RelatedFileNameB"] = bytestring(readbytes(fh,68)) > dnp["RelatedFileNameC"] = bytestring(readbytes(fh,68)) > dnp["Annotate"] = bytestring(readbytes(fh,84)) > dnp["InstrumentModel"] = bytestring(readbytes(fh,36)) > dnp["InstrumentSerialNumber"] = bytestring(readbytes(fh,36)) > dnp["SoftwareVersionNumber"] = bytestring(readbytes(fh,36)) > dnp["CrystalMaterial"] = bytestring(readbytes(fh,36)) > dnp["LaserWavelengthMicrons"] = read(fh, Float64) > dnp["LaserNullDoubling"] = read(fh, Uint32) > dnp["Padding"] = read(fh, Uint32) > dnp["DispersionConstantXc"] = read(fh, Float64) > dnp["DispersionConstantXm"] = read(fh, Float64) > dnp["DispersionConstantXb"] = read(fh, Float64) > dnp["NumChan"] = read(fh, Uint32) > dnp["InterferogramSize"] = read(fh, Uint32) > dnp["ScanDirection"] = read(fh, Uint32) > dnp["ACQUIREMODE"] = read(fh, Uint32) > dnp["EMISSIWITY"] = read(fh, Uint32) > dnp["APODIZATION"] = read(fh, Uint32) > dnp["ZEROFILL"] = read(fh, Uint32) > dnp["RUNTIMEMATH"] = read(fh, Uint32) > dnp["FFTSize"] = read(fh, Uint32) > dnp["NumberOfCoAdds"] = read(fh, Uint32) > dnp["SingleSided"] = read(fh, Uint32) > dnp["ChanDisplay"] = read(fh, Uint32) > dnp["AmbTemperature"] = read(fh, Float64) > dnp["InstTemperature"] = read(fh, Float64) > dnp["WBBTemperature"] = read(fh, Float64) > dnp["CBBTemperature"] = read(fh, Float64) > dnp["TEMPERATURE_DWR"] = read(fh, Float64) > dnp["EMISSIVITY_DWR"] = read(fh, Float64) > dnp["LaserTemperature"] = read(fh, Float64) > dnp["SpareI"] = read(fh, Uint32,10) > dnp["SpareF"] = read(fh, Float64,10) > dnp["SpareNA"] = bytestring(readbytes(fh,68)) > dnp["SpareNB"] = bytestring(readbytes(fh,68)) > dnp["SpareNC"] = bytestring(readbytes(fh,68)) > dnp["SpareND"] = bytestring(readbytes(fh,68)) > dnp["SpareNE"] = bytestring(readbytes(fh,68)) > dnp["End"] = bytestring(readbytes(fh,4)) > > > dnp["Interferograms"] = read(fh, Int16, dnp["InterferogramSize"], > dnp["NumberOfCoAdds"]) > fft_size = dnp["FFTSize"] * dnp["ZEROFILL"] * 512 > dnp["Spectrum"] = read(fh, Float32, fft_size) > > close(fh) > > wavelength_range = 10000.0 / dnp["LaserWavelengthMicrons"] > spectral_range = wavelength_range / 2 > spectral_binsize = spectral_range / fft_size > x_fft = [0:fft_size-1] * spectral_binsize > m = dnp["DispersionConstantXm"] > b = dnp["DispersionConstantXb"] > c = dnp["DispersionConstantXc"] > x_corrected = x_fft + c + exp10(m * x_fft + b) > dnp["WL_cm"] = x_corrected > dnp["WL_microns"] = 10000.0 ./ x_corrected > > > return dnp > end > > Which works fine, but it leaves me with the data in a form that's ugly (to > me) in calculations: dnp["InterferogramSize"] * dnp["NumberOfCoAdds"] > Instead of: dnp.InterferogramSize * dnp.NumberOfCoAdds > > I can create an appropriate type like: > type DNP > Label > Version > Revision > Date > #### etc etc > end > > ..but I can't figure out a good way to get the data there. Well, other > than keeping my current function, defining the type, and then having > another function to copy the data into the type... ugggggly. > > I read all the docs I could find on types but never saw anything that > hinted at a solution.. maybe a function/type hybrid?? > I tried creating the type within the function but didn't get anywhere. > Ideas? >
