* add custom.py to README
* Cython: add column_header to print_group * tdm_reaper.cpp/.hpp: allow for custom header and default header with ids * add custom.py as example * fix minimal.py/usage.py to run successfully by default
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@ -275,9 +275,13 @@ to simply extract all data of the TDM datatset and dump it to files in a given
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```Python
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import tdm_reaper
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jack = tdm_reaper.tdmreaper(b'samples/SineData.tdm',b'samples/SineData.tdx')
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jack.write_all(b"./my_tdm_data/")
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jack.write_all(b"./my_tdm_data_directory/")
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```
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The interface allows to construct customized file/column headers from any
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meta-data and provide these headers for usage in file output (for an example
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see [customized filehader](python/custom.py)).
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## References
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### TDM
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@ -36,9 +36,9 @@ cdef class tdmreaper:
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return jn.loads(chnstr.decode())
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# print a channel(-group)
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def print_channelgroup(self, string id, const char* filename,
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bool include_meta, char delimiter):
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self.cpp_tdm.print_group(id,filename,include_meta,delimiter)
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def print_channelgroup(self, string id, const char* filename, bool include_meta,
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char delimiter, string column_header):
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self.cpp_tdm.print_group(id,filename,include_meta,delimiter,column_header)
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def print_channel(self, string id, const char* filename,
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bool include_meta):
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self.cpp_tdm.print_channel(id,filename,include_meta)
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@ -48,4 +48,4 @@ cdef class tdmreaper:
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grpids = self.cpp_tdm.get_channelgroup_ids()
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for id in grpids :
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grpfile = outputdir.decode() + "/channelgroup_" + id.decode() + ".csv"
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self.cpp_tdm.print_group(id,grpfile.encode(),True,ord(','))
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self.cpp_tdm.print_group(id,grpfile.encode(),True,ord(','),"".encode())
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@ -24,5 +24,6 @@ cdef extern from "tdm_reaper.hpp":
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string get_channelgroup_info(string id) except+
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string get_channel_info(string id) except+
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# print a channel(-group)
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void print_group(string id, const char* filename, bool include_meta, char delimiter) except+
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void print_group(string id, const char* filename, bool include_meta,
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char delimiter, string column_header) except+
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void print_channel(string id, const char* filename, bool include_meta) except+
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@ -698,7 +698,8 @@ void tdm_reaper::print_channel(std::string &id, const char* filename, bool inclu
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}
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}
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void tdm_reaper::print_group(std::string &id, const char* filename, bool include_meta, char sep)
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void tdm_reaper::print_group(std::string &id, const char* filename, bool include_meta,
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char sep, std::string column_header)
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{
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// check required path
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this->check_filename_path(filename);
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@ -724,6 +725,7 @@ void tdm_reaper::print_group(std::string &id, const char* filename, bool include
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int width = 25;
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// file header
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if ( include_meta )
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{
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// group meta data
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@ -781,6 +783,30 @@ void tdm_reaper::print_group(std::string &id, const char* filename, bool include
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allchns.push_back(chndat);
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}
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// provide column header (with channel ids)
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if ( column_header.empty() )
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{
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for ( std::string chn: chngrp.channels_ )
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{
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// use given csv separator token
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if ( sep == ' ' )
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{
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fou<<std::setw(width)<<std::left<<chn;
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}
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else
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{
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fou<<chn;
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}
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if ( chn != chngrp.channels_.back() && sep != ' ' ) fou<<sep;
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}
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}
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else
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{
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fou<<column_header;
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}
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fou<<"\n";
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// write data
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for ( unsigned int row = 0; row < maxrows; row++ )
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{
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for ( unsigned int chi = 0; chi < chngrp.channels_.size(); chi++ )
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@ -239,7 +239,8 @@ public:
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// dump a single channel/entire group (identified by id) to file
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void print_channel(std::string &id, const char* filename, bool include_meta = true);
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void print_group(std::string &id, const char* filename, bool include_meta = true, char sep = ' ');
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void print_group(std::string &id, const char* filename, bool include_meta = true,
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char sep = ' ', std::string column_header = std::string(""));
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void check_filename_path(const char* filename);
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// check machine's datatypes
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50
python/custom.py
Normal file
50
python/custom.py
Normal file
@ -0,0 +1,50 @@
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import tdm_reaper
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import json
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import re
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# create 'tdm_reaper' instance object
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try :
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jack = tdm_reaper.tdmreaper(b'samples/SineData.tdm',b'samples/SineData.tdx')
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except RuntimeError as e :
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print("failed to load/decode TDM files: " + str(e))
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# list ids of channelgroups
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grpids = jack.get_channelgroup_ids()
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# iterate through group-ids
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for grp in grpids[0:2] :
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# obtain meta data of channelgroups
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grpinfo = jack.get_channelgroup_info(grp)
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print( json.dumps(grpinfo,sort_keys=False,indent=4) )
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# get channel meta-data and compose header
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column_header = ""
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chns = grpinfo['channels'].split(' ')
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for chn in chns :
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# obtain channel's meta-data as dictionary (JSON)
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chninfo = jack.get_channel_info(chn.encode())
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# print( json.dumps(chninfo,sort_keys=False,indent=4) )
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# choose e.g. channel-id and name to compose column header
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chnhead = ( str(chninfo['channel-id']) + "("
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+ str(chninfo['name']).replace(',',' ') + ")" )
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# append to full header
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column_header = column_header + chnhead + ","
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# remove last comma
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column_header = column_header[0:-1]
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print("column_header:\n"+column_header+"\n")
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# write channelgroup to file
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try :
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grpname = re.sub('[^A-Za-z0-9]','',grpinfo['name'])
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grpfile = str("./channelgroup_") + str(grp.decode()) + "_" + str(grpname) + str(".csv")
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jack.print_channelgroup(grp, # id of group to be written
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grpfile.encode(), # filename
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False, # no meta-data header
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ord(','), # csv separator character
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column_header.encode() # provide column header
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)
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except RuntimeError as e :
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print("failed to print channelgroup: " + str(grp) + " : " + str(e))
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@ -10,6 +10,11 @@ try :
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for grp in grpids :
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# write channelgroup to file (prepend './' for local directory!!)
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grpfile = "./channelgroup_" + str(grp.decode()) + ".csv"
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jack.print_channelgroup(grp,grpfile.encode(),True,ord(' '))
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jack.print_channelgroup(grp, # id of group to be written
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grpfile.encode(), # filename
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False, # include meta-data fileheader?
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ord(','), # csv separator character
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b"" # (empty=default) column header
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)
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except RuntimeError as e :
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print("failed to load/decode/write TDM files: " + str(e))
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@ -24,8 +24,8 @@ for grp in grpids[0:2] :
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# write channelgroup to file
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try :
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grpname = re.sub('[^A-Za-z0-9]','',grpinfo['name'])
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grpfile = "channelgroup_" + str(grp) + "_" + str(grpname) + ".csv"
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jack.print_channelgroup(grp.encode(),grpfile.encode(),True,ord(' '))
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grpfile = "./channelgroup_" + str(grp) + "_" + str(grpname) + ".csv"
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jack.print_channelgroup(grp.encode(),grpfile.encode(),True,ord(' '),b'')
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except RuntimeError as e :
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print("failed to print channelgroup: " + str(grp) + " : " + str(e))
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@ -49,7 +49,7 @@ for chn in chnids[0:2] :
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print(str(chndata[0:6]) + " ...")
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# write channel to file
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chnfile = "channel_" + str(chn) + ".csv"
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chnfile = "./channel_" + str(chn) + ".csv"
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try :
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jack.print_channel(chn.encode(),chnfile.encode(),True)
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except RuntimeError as e :
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