MEA Tools problem

Dear, I’m using
MEA tools extension of matlab for MEA data analysis. I first create the
variable “D” from a mcd file and save it in the workspace. Then, I use
the datastream summary function in display function and matlab return
“there is currently no MCRack
file open in your workspace, please choose a suitable file” whereas D
is open in the
workspace. Moreover when I try opening the mcd file directly from
datastream summary the following message appears :




" ??? Undefined function or variable 'datastrm'.
Error in ==> C:\MATLAB6p5\toolbox\meatools\mcssummaryctrl.m
On line 25 ==> evalin('base', ['global D; D=datastrm(''' fullfile(datapath, datafile) ''');']);
Error in ==> C:\MATLAB6p5\toolbox\meatools\dstream_sum_fig.m
On line 262 ==> mcssummaryctrl('showDinfo', 'dsfh', h0);
??? Error while evaluating uimenu Callback. "



Does anyone have a explanation or a solution to my problem? Thank you.





Here are the information of D delivered by array editor :






filename:
'test.mcd'


fid: -1


BitFlipRemoveFactor: 0


meatype: '8x8'


version: '2.4.9'


filesize: 187249


id: 0


DataType: ''


NChannels: 0


NChannels2: 55


ChannelNames: ''


ChannelNames2: {{55x1 cell}}


HardwareChannelNames: ''


HardwareChannelNames2: {{55x1 cell}}


MicrovoltsPerAD: 1


MicrovoltsPerAD2: 0.0114


MicrosecondsPerTick: 40


ZeroADValue: 2048


ZeroADValue2: 32768


ChannelID: 0


ChannelID2: {[55x1 double]}


HardwareChannelID: 0


HardwareChannelID2: {[55x1 double]}


sorterleft: [1x128 double]


sorterright: [1x128 double]


mea8x8ChannelNames: {1x64 cell}


total_window_ticks: 25000


offset_to_data: 0


recordingdate: 7.3407e+005


recordingStopDate: 7.3407e+005


sweepStartTime: 0


sweepStartPointer: 0


windowTicksPos: 0


triggerChannel: -1


spikeSize: 0


ticks_pre_event: 0


maxSpkPerSegmPerChanl: 0


nSpikesPerSegement: 0


nSpkPerSegPerChanl: 0


HeaderVersion: 10


fileaccess: 'ole'


MillisamplesPerSecond: 25000000


MillisamplesPerSecond2: 25000000


StreamCount: 1


StreamNames: {'Spikes 1'}


StreamInfo: {[1x1 struct]}


SamplesPerSegment: 2500


TriggerStreamID: [-1 -1]


TimeWindow: [1x1 struct]


softwareversion: '3.8.2.0'


TotalChannels: 64


sweepStopTime: 2300

Have you tried:

global D

However the support for MeaTools has timed out. See: http://material.brainworks.uni-freiburg.de/research/meatools/

There are alternative solutions for Matlab now:
See: http://www.find.bccn.uni-freiburg.de/
Or: http://sigtool.sourceforge.net/

Both use the Neuroshare interface. Direct Neuroshare commands in Matlab could be also an alternative.

Jens