Read Excel Range which is a "Table" is not working with readtable(file,'Range','NameOfRange')

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Sebastian Neubauer 2023-2-22

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回答： Sebastian Neubauer 2023-2-22

Excel_Read_Write_Matlab.xlsx

How can i read a Range in excel which is a table, like in screenshot "Doof" or "excelTab_Zahl" ?

The access to "Dumm" is working but not all the others, despide of they all are listed in the name Manager (see screenshot)

My code:

opts = detectImportOptions('Excel_Read_Write_Matlab.xlsx')

%Working:

data = readtable('Excel_Read_Write_Matlab.xlsx', 'Range', 'Dumm'); %'excelTab_Text'

%Not Working:

data = readtable('Excel_Read_Write_Matlab.xlsx', 'Range', 'Doof'); %'excelTab_Text'

data = readtable('Excel_Read_Write_Matlab.xlsx', 'Range', 'excelTab_Text'); %'excelTab_Text'

data = readtable('Excel_Read_Write_Matlab.xlsx', 'Range', 'excelTab_Zahl'); %'excelTab_Text'

Result of "My code":

opts =

SpreadsheetImportOptions with properties:

Sheet Properties:

Sheet: ''

Replacement Properties:

MissingRule: 'fill'

ImportErrorRule: 'fill'

Variable Import Properties: Set types by name using setvartype

VariableNames: {'A', 'B', 'C' ... and 6 more}

VariableTypes: {'double', 'char', 'char' ... and 6 more}

SelectedVariableNames: {'A', 'B', 'C' ... and 6 more}

VariableOptions: Show all 9 VariableOptions

Access VariableOptions sub-properties using setvaropts/getvaropts

VariableNamingRule: 'modify'

Range Properties:

DataRange: 'A2' (Start Cell)

VariableNamesRange: 'A1'

RowNamesRange: ''

VariableUnitsRange: ''

VariableDescriptionsRange: ''

To display a preview of the table, use preview

Error using readtable

Unable to determine range. Range must be of the form 'A1' (cell), 'A:B' (column-select), '1:5' (row-select), 'A1:B5'

(rectangle-select), or a valid named range in the sheet.

Screenshot of Excel and the Range name Manager:

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Stephen23 2023-2-22

Unfortunately tables are somewhat different to named ranges (although in general it is possible to convert between them). Perhaps this is just an oversight by TMW: you should make an enhancement request:

https://www.mathworks.com/matlabcentral/answers/460998-how-can-i-make-a-features-request

Sebastian Neubauer 2023-2-22

I tried to do so: Case Number 06049647

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Answer 1

Sebastian Neubauer 2023-2-22

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"[...] This requires to set import optional Name-Value pair 'UseExcel', 'on' when calling readtable. An enhancement request has already been created in our internal documetnation and is under consideration for a future release. Until then, setting 'UseExcel' is mandatory when using named ranges.[...]"

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Answer 2

Timo Dietz 2023-2-22

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Maybe I'm wrong, but I assume Matlab can not access Excel range definitions ('Namens-Manager') and you have to address column and row by their identifiers ('A1', 'A:B', ...).

See the opts output. Your range definitions are not listed. Just my assumption.

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Timo Dietz 2023-2-22

Have you tried 'readcell' instead of readtable? I encountered that readtable seems to interpret the range differently depending on the cell content. If it's numeric, all data is in rows and the table col names (VariableNames) are just 'Var x', if the cells contain text, the first row in the range is taken as variable names for the table and thus is not part of the data. Not what I assumed. I think it's worth a try.

Sebastian Neubauer 2023-2-22

I got the answer to use the 'UseExcel' option.

"[...] This requires to set import optional Name-Value pair 'UseExcel', 'on' when calling readtable. An enhancement request has already been created in our internal documetnation and is under consideration for a future release. Until then, setting 'UseExcel' is mandatory when using named ranges.[...]"

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