6 给列表添加信息可以使用列表属性。如图，通过T.Properties.VariableNames可以获取或设置列名称；通过T.Properties.RowNames可以获取或设置行名称；通过T.Properties.DimensionNames可以获取或设置维度名称。注意事项 table表格所支持的属性值很多，除了正文中提到的，还有Description,VariableDescriptions,VariableUnits,UserData 指...
沿用表Table.2中nasdaq.csv文件,我们可以使用readtable函数,构造一个新的table对象,把csv文件中的数据导入到该对象中。readtable函数接受文件名称作为输入,返回一个table对象。 % 通过readtable函数来构造table对象 >> nasdaq = readtable('nasdaq.csv') Warning: Variable names were modified to make them valid ...
If a table variable is not a valid variable name, you have to use the .('varname') notation, e.g.: ThemeCopy mytable.('SMN_-24dBSNR') %access table variable SMN_-24dBSNR To tell readtable to preserve the original variable names, ThemeCopy readtable(yourfile, 'PreserveVariableNames...
fieldNames = fieldNames'; varNames = {'CM','Sen','Spc','Prc','F1','Acc'}; varTypes = {'cell','double','double','double','double','double'}; CMCell =cell(numel(fieldNames),1); CMTable = table('Size', [numel(fieldNames)numel(varNames)],'VariableTypes', varTypes,'VariableName...
CMTable = table('Size', [numel(fieldNames)numel(varNames)],'VariableTypes', varTypes,'VariableNames', varNames,'RowNames', fieldNames); foriField = 1:numel(fieldNames) curCM =getfield(CM, fieldNames{iField}); resultCM = genRes(curCM); ...
readtable函数接受文件名称作为输入,返回一个table对象。 1. % 通过readta 8、ble函数来构造table对象2. >> nasdaq = readtable('nasdaq.csv')3. Warning: Variable names were modified to make them valid MATLAB identifiers. 4. nasdaq = 5. Symbol Name MarketCap IPOYear6. _ _ _ _7. 'AAPL' '...
如果能把表Table.2和表Table.2中的DepartmentID“对上”,从而构造出一个有三列数据的新表,并且其中三列分别是LastName,DepartmentID,DepartmentName,那么就只用查一次表了,这个操作其实就是table的join操作。 % join >> t1 = join(A,B) % join的第一个参数叫做左表,第二个参数叫做右表 ...
在MATLAB中,可以使用函数array2table将数组转换为表格。其基本语法如下: T = array2table(A,'VariableNames',varNames) 其中,A是要转换的数组,'VariableNames'是一个可选参数,用于指定表格的变量名称,varNames是一个字符串数组,其中的每个元素都是一个变量的名称。 示例1:将一维数组转换为表格 A = [1, 2, 3...
% 通过readtable函数来构造table对象 >> nasdaq = readtable('nasdaq.csv') Warning: Variable names were modified to make them valid MATLAB identifiers. nasdaq = Symbol Name MarketCap IPOYear ___ ___ ___ ___ 'AAPL' 'Apple Inc' '$742.63B' 1980 'AMZN' 'Amazon...
T = readtable(fullFileName, opts, 'ReadVariableNames', true) The readtable function defaults to using the variable names in the import options, so if you've set a variable name, opts.VariableNames{4} = 'FOUR'; You'll see that reflected in the table without specifying...