我的客户正在发送在National Instruments Diadem中捕获的TDM / TDX文件，这是我没有得到的。我正在寻找一种方法将文件转换为.CSV，XLS或.MAT文件，以便在Matlab中进行分析（不使用Diadem或Diadem DLL！）
格式由结构良好的XML文件（.TDM）和二进制（.TDX）组成，.TDM定义如何将字段打包为二进制TDX中的位。我想阅读这些文件（用于Matlab和其他环境）。有没有人在例如Python或Perl（不使用NI DLL）或直接在Matlab中使用通用工具或转换脚本？
我已经考虑购买该工具，但除了一次性转换为兼容的文件格式之外，我不喜欢它。
谢谢！
答案 0 :(得分：5)
我知道这有点晚了，但我有一个简单的库来读取Python中的TDM / TDX文件。它的工作原理是解析TDM文件以找出数据类型，然后使用NumPy.memmap打开TDX文件。然后它可以像标准的NumPy数组一样使用。代码非常简单，所以你可以在Matlab中实现类似的东西。
以下是链接：https://bitbucket.org/joshayers/tdm_loader
希望有所帮助。
答案 1 :(得分：2)
可能有点太晚了，但我认为有一种简单的方法可以从TDM文件中获取数据：NI提供了将TDM文件读入Excel和OpenOffice Calc的插件。拥有其中一个程序中的数据，您可以使用CSV导出。在谷歌搜索“tdm excel”或“tdm openoffice”。
希望这会有所帮助...... Gemue
答案 2 :(得分：0)
以下脚本可以将所有变量转换为“变量”结构。
CurrDirectory = '...//'; % Path to current directory
fileNametdx = '.../utility/'; % Path to TDX file
%%
% Data type conversion
Dtype.eInt8Usi='int8';
Dtype.eInt16Usi='int16';
Dtype.eInt32Usi='int32';
Dtype.eInt64Usi='int64';
Dtype.eUInt8Usi='uint8';
Dtype.eUInt16Usi='uint16';
Dtype.eUInt32Usi='uint32';
Dtype.eUInt64Usi='uint64';
Dtype.eFloat32Usi='single';
Dtype.eFloat64Usi='double';
%% Read .tdx file Name
wb=waitbar(0,'Reading *.tdx Files');
fileNameTDM = strrep(fileNametdx,'.tdx','.TDM');
%% Read .TDM
tdm=xml2struct(fileNameTDM);
for i=1:numel(tdm.usi_colon_tdm.usi_colon_data.tdm_channel)
waitbar((1/numel(tdm.usi_colon_tdm.usi_colon_data.tdm_channel))*i,wb,['File ' fileNametdx ' conversion started']);
s1=strsplit(string(tdm.usi_colon_tdm.usi_colon_data.tdm_channel{1, i}.local_columns.Text),'"');
usi1=s1(2);
% if condition match untill we get usi2
for j=1:numel(tdm.usi_colon_tdm.usi_colon_data.localcolumn)
usi2=string(tdm.usi_colon_tdm.usi_colon_data.localcolumn{1, j}.Attributes.id);
if usi1==usi2
%take new usi
s2=strsplit(string(tdm.usi_colon_tdm.usi_colon_data.localcolumn{1, j}.values.Text),'"');
new_usi1=s2(2);
w1=strsplit(string(tdm.usi_colon_tdm.usi_colon_data.tdm_channel{1, i}.datatype.Text),'_');
str_1=char(strcat('tdm.usi_colon_tdm.usi_colon_data.',lower(w1(2)),'_sequence'));
str_2=char(strcat('tdm.usi_colon_tdm.usi_colon_data.',lower(w1(2)),'_sequence{1, k}.Attributes.id'));
str_3=char(strcat('tdm.usi_colon_tdm.usi_colon_data.',lower(w1(2)),'_sequence{1, k}.values.Attributes.external'));
str_4=char(strcat('tdm.usi_colon_tdm.usi_colon_data.',lower(w1(2)),'_sequence{1, k}.values'));
for k=1:numel(eval(str_1))
new_usi2=string(eval(str_2));
if new_usi1==new_usi2
if isfield(eval(str_4), 'Attributes')
inc_value1=string(eval(str_3));
for m=1:numel(tdm.usi_colon_tdm.usi_colon_include.file.block)
inc_value2=string(tdm.usi_colon_tdm.usi_colon_include.file.block{1, m}.Attributes.id);
if inc_value1==inc_value2
% offset=round(str2num(tdm.usi_colon_tdm.usi_colon_include.file.block{1, m}.Attributes.byteOffset)/8);
length = round(str2num(tdm.usi_colon_tdm.usi_colon_include.file.block{1, m}.Attributes.length));
offset1=round(str2num(tdm.usi_colon_tdm.usi_colon_include.file.block{1, m}.Attributes.byteOffset));
value_type = tdm.usi_colon_tdm.usi_colon_include.file.block{1, m}.Attributes.valueType;
m = memmapfile(fullfile(CurrDirectory,fileNametdx),'Offset',offset1,'Format',{Dtype.(value_type) [length 1] 'dat'},'Writable',true,'Repeat',1);
dat=m.Data.dat ;
end
end
else
str_5=char(strcat('tdm.usi_colon_tdm.usi_colon_data.',lower(w1(2)),'_sequence{1, k}.values.',char(fieldnames(tdm.usi_colon_tdm.usi_colon_data.string_sequence{1, k}.values))));
dat=eval(str_5)';
end
name_variable = string(tdm.usi_colon_tdm.usi_colon_data.tdm_channel{1, i}.name.Text);
varname = genvarname(char(name_variable));
variable.(varname) = dat;
end
end
end
end
end
waitbar(1,wb,[fileNametdx ' conversion completed']);
pause(1)
close(wb)
delete(fullfile(CurrDirectory,fileNametdx),fullfile(CurrDirectory,fileNameTDM));
%Output Variable is Struct
clearvars -except variable
此脚本需要以下 XML 解析器
function [ s ] = xml2struct( file )
%Convert xml file into a MATLAB structure
% [ s ] = xml2struct( file )
%
% A file containing:
% <XMLname attrib1="Some value">
% <Element>Some text</Element>
% <DifferentElement attrib2="2">Some more text</Element>
% <DifferentElement attrib3="2" attrib4="1">Even more text</DifferentElement>
% </XMLname>
%
% Will produce:
% s.XMLname.Attributes.attrib1 = "Some value";
% s.XMLname.Element.Text = "Some text";
% s.XMLname.DifferentElement{1}.Attributes.attrib2 = "2";
% s.XMLname.DifferentElement{1}.Text = "Some more text";
% s.XMLname.DifferentElement{2}.Attributes.attrib3 = "2";
% s.XMLname.DifferentElement{2}.Attributes.attrib4 = "1";
% s.XMLname.DifferentElement{2}.Text = "Even more text";
%
% Please note that the following characters are substituted
% '-' by '_dash_', ':' by '_colon_' and '.' by '_dot_'
%
% Written by W. Falkena, ASTI, TUDelft, 21-08-2010
% Attribute parsing speed increased by 40% by A. Wanner, 14-6-2011
% Added CDATA support by I. Smirnov, 20-3-2012
%
% Modified by X. Mo, University of Wisconsin, 12-5-2012
if (nargin < 1)
clc;
help xml2struct
return
end
if isa(file, 'org.apache.xerces.dom.DeferredDocumentImpl') || isa(file, 'org.apache.xerces.dom.DeferredElementImpl')
% input is a java xml object
xDoc = file;
else
%check for existance
if (exist(file,'file') == 0)
%Perhaps the xml extension was omitted from the file name. Add the
%extension and try again.
if (isempty(strfind(file,'.xml')))
file = [file '.xml'];
end
if (exist(file,'file') == 0)
error(['The file ' file ' could not be found']);
end
end
%read the xml file
xDoc = xmlread(file);
end
%parse xDoc into a MATLAB structure
s = parseChildNodes(xDoc);
end
% ----- Subfunction parseChildNodes -----
function [children,ptext,textflag] = parseChildNodes(theNode)
% Recurse over node children.
children = struct;
ptext = struct; textflag = 'Text';
if hasChildNodes(theNode)
childNodes = getChildNodes(theNode);
numChildNodes = getLength(childNodes);
for count = 1:numChildNodes
theChild = item(childNodes,count-1);
[text,name,attr,childs,textflag] = getNodeData(theChild);
if (~strcmp(name,'#text') && ~strcmp(name,'#comment') && ~strcmp(name,'#cdata_dash_section'))
%XML allows the same elements to be defined multiple times,
%put each in a different cell
if (isfield(children,name))
if (~iscell(children.(name)))
%put existsing element into cell format
children.(name) = {children.(name)};
end
index = length(children.(name))+1;
%add new element
children.(name){index} = childs;
if(~isempty(fieldnames(text)))
children.(name){index} = text;
end
if(~isempty(attr))
children.(name){index}.('Attributes') = attr;
end
else
%add previously unknown (new) element to the structure
children.(name) = childs;
if(~isempty(text) && ~isempty(fieldnames(text)))
children.(name) = text;
end
if(~isempty(attr))
children.(name).('Attributes') = attr;
end
end
else
ptextflag = 'Text';
if (strcmp(name, '#cdata_dash_section'))
ptextflag = 'CDATA';
elseif (strcmp(name, '#comment'))
ptextflag = 'Comment';
end
%this is the text in an element (i.e., the parentNode)
if (~isempty(regexprep(text.(textflag),'[\s]*','')))
if (~isfield(ptext,ptextflag) || isempty(ptext.(ptextflag)))
ptext.(ptextflag) = text.(textflag);
else
%what to do when element data is as follows:
%<element>Text <!--Comment--> More text</element>
%put the text in different cells:
% if (~iscell(ptext)) ptext = {ptext}; end
% ptext{length(ptext)+1} = text;
%just append the text
ptext.(ptextflag) = [ptext.(ptextflag) text.(textflag)];
end
end
end
end
end
end
% ----- Subfunction getNodeData -----
function [text,name,attr,childs,textflag] = getNodeData(theNode)
% Create structure of node info.
%make sure name is allowed as structure name
name = toCharArray(getNodeName(theNode))';
name = strrep(name, '-', '_dash_');
name = strrep(name, ':', '_colon_');
name = strrep(name, '.', '_dot_');
attr = parseAttributes(theNode);
if (isempty(fieldnames(attr)))
attr = [];
end
%parse child nodes
[childs,text,textflag] = parseChildNodes(theNode);
if (isempty(fieldnames(childs)) && isempty(fieldnames(text)))
%get the data of any childless nodes
% faster than if any(strcmp(methods(theNode), 'getData'))
% no need to try-catch (?)
% faster than text = char(getData(theNode));
text.(textflag) = toCharArray(getTextContent(theNode))';
end
end
% ----- Subfunction parseAttributes -----
function attributes = parseAttributes(theNode)
% Create attributes structure.
attributes = struct;
if hasAttributes(theNode)
theAttributes = getAttributes(theNode);
numAttributes = getLength(theAttributes);
for count = 1:numAttributes
%attrib = item(theAttributes,count-1);
%attr_name = regexprep(char(getName(attrib)),'[-:.]','_');
%attributes.(attr_name) = char(getValue(attrib));
%Suggestion of Adrian Wanner
str = toCharArray(toString(item(theAttributes,count-1)))';
k = strfind(str,'=');
attr_name = str(1:(k(1)-1));
attr_name = strrep(attr_name, '-', '_dash_');
attr_name = strrep(attr_name, ':', '_colon_');
attr_name = strrep(attr_name, '.', '_dot_');
attributes.(attr_name) = str((k(1)+2):(end-1));
end
end
end