function update_patchlog(trial,time_since_prev_trial,log_filename,OVSF_presyn,OVSF_postsyn,pulse_duration_presyn,pulse_duration_postsyn,sampling_rate,...
    stim_philosophy_or_timing_offset,output_channel_to_presynaptic,patchlog_name)
%modifies the patchlog after each trial by adding a new dataset recording that trial to the patchlog                 


%first read the trial log into a variable
input_reading=daqread(log_filename);

raw_temperature_data=input_reading(:,3);
temperature_during_train_mean=mean(raw_temperature_data);
temperature_during_train_std=std(raw_temperature_data);

input_reading=input_reading(:,1:2);


%if the presynaptic neuron is patched by the electrode on amplifier channel 2, flip the input info l-r (the output having been flipped earlier)
if output_channel_to_presynaptic==2
    input_reading=fliplr(input_reading);        %flipping the input channel data
end                                               

%putting OVSF for this trial as the first item in each column
OVSF_presyn_mat=[OVSF_presyn OVSF_presyn];
OVSF_postsyn_mat=[OVSF_postsyn OVSF_postsyn];
pulse_duration_presyn_mat=[pulse_duration_presyn pulse_duration_presyn];
pulse_duration_postsyn_mat=[pulse_duration_postsyn pulse_duration_postsyn];
sampling_rate_mat=[sampling_rate sampling_rate];
stim_philosophy_or_timing_offset_mat=[stim_philosophy_or_timing_offset stim_philosophy_or_timing_offset];
output_channel_to_presynaptic_mat=[output_channel_to_presynaptic output_channel_to_presynaptic];
temperature_during_train_mean_mat=[temperature_during_train_mean temperature_during_train_mean];
temperature_during_train_std_mat=[temperature_during_train_std temperature_during_train_std];


input_reading=cat(1,OVSF_presyn_mat,OVSF_postsyn_mat,pulse_duration_presyn_mat,pulse_duration_postsyn_mat,sampling_rate_mat,...
    stim_philosophy_or_timing_offset_mat,output_channel_to_presynaptic_mat,temperature_during_train_mean_mat,...
    temperature_during_train_std_mat,input_reading);
%note -- experiments from before oct 20, 2003 will only have OVSF (equivalent to OVSF_presyn) appended to the beginning of the trial

%open the .hdf log file to write
storingraw=hdfsd('start',patchlog_name,'write');

%create the data set within the .hdf log file
ds_name=int2str(time_since_prev_trial);  %sets the ITI as the name of the data set
ds_type='double';
ds_rank=2;
ds_dims=fliplr(size(input_reading));      %flipping per the row/column preferences of hdf
sds_id_u_p=hdfsd('create',storingraw,ds_name,ds_type,ds_rank,ds_dims);   

%place the data into the sds
ds_start=zeros(1:ndims(input_reading)); %start at the beginning
ds_stride=[];                           %write every element
ds_edges=fliplr(size(input_reading));   %reverse the dimensions for the conventions of hdf
stathey=hdfsd('writedata',sds_id_u_p,ds_start,ds_stride,ds_edges,input_reading);

%this stanza was used to confirm that the number of datasets == the number of trials;  also confirmed the sds number starts at zero for the first trial and then increments (feb 24,2003)
%trialnum=trial
%sds_id_new=hdfsd('select',storingraw,trial-1)%if trial == number_of_trials
%if trial==number_of_trials
%    disp('fromupdate')
%    [ndatasets,nglobal_atts,stat]=hdfsd('fileinfo',storingraw)
%end

%close the dataset
statupdate1=hdfsd('endaccess',sds_id_u_p);

%close the sd file
statups=hdfsd('end',storingraw);