Return True # I haven't finished writing the function.
Auto recalculate in excel code#
# Note: these two lines of code appear not to have any effect. # and the whole sheet automatically recalculates) # (when manually operating this spreadsheet, I just input a new value, # Now I want the sheet to recalculate and give me a new output. Print("The original value of myOutput is : ", myOutput) MyOutput = ws.Cells(1,2).Value # this cell is calculated MyInput = ws.Cells(1,1).Value # this is an input cell, not calculated Main question: How can I force a recalculation of the sheet from python?Įxcel = ("Excel.Application") Note, when I say "calculated cells", these cells rely on functions that are part of a VBA macro/the add-in. Manually, I can press CTRL+ALT+F9, and the sheet recalculates, leaving no #VALUE! cells. Also, after running the below code, when I open up the sheet manually, I see that the calculated cells all say #VALUE!.
When I try to read the output cell, I get an error as described below. I can input a value into an input cell, but the sheet does not recalculate. I am trying to automate it with win32com & python. You can use Aspose.Cells Formula Calculation Engine API i.e worksheet.Calculate(string formula) to calculate the results of such formulas without actually adding them in worksheet.Description of problem: I have been manually using a spreadsheet that works with an excel add-in. The values of the cells used in formula already exist in a worksheet and all you need is to find the result of those values based on some Ms-Excel formula without adding the formula in a worksheet. Sometimes, you need to calculate the results of formulas directly without adding them actually in a worksheet. Besides, re-calculating the formula imported from the designer file, Aspose.Cells also supports to calculate the results of formulas directly. Save ( FileName ) Direct Calculation of Formulaįormula calculation engine is embedded in Aspose.Cells. CalculateFormula () //Print the time after formula calculationĬonsole. CreateCalcChain = false //Calculate the workbook formulas Workbook workbook = new Workbook ( FileName ) //Print the time before formula calculationĬonsole. String FilePath = Files\" string FileName = FilePath + "Adding Formula.xlsx" //Load the template workbook If you are seeking to improve performance of formula calculations by Aspose.Cells and you do not want to create formula calculating chain, then please set as false. However, if the user template contains lots of diverse formulas, then first time of formula calculation can consume lot of CPU processing time and memory.Īspose.Cells allows you to turn off creating calculating chain which is useful in scenarios when you want to calculate formulas of your file only once. It increases performance when formulas are calculated for the second or third time etc. When the user calls Workbook.CalculateFormula() to calculate the values of the formulas inside the workbook template, Aspose.Cells creates a calculating chain. Save ( "Adding Formula.xls" ) Calculating Formulas Once Only CalculateFormula () //Get the calculated value of the cell Formula = "=SUM(A1:A3)" //Calculating the results of formulas PutValue ( 3 ) //Adding a SUM formula to "A4" cell PutValue ( 2 ) //Adding a value to "A3" cell PutValue ( 1 ) //Adding a value to "A2" cell Add () //Obtaining the reference of the newly added worksheet by passing its sheet index Workbook workbook = new Workbook () //Adding a new worksheet to the Excel object Read the url:list of functions supported by the CalculateFormula method.
To calclulate the results of the formulas, call the Excel class' CalculateFormula method which processes all the formulas embedded in an Excel file. Use a comma (,) to delimit function parameters. When applying a formula to a cell, always begin the string with an equal sign (=) as you do when creating a formula in Microsoft Excel. Use the Cell class' Formula property to add a formula to a cell.
Aspose.Excel supports a huge set of Mathematical, String, Boolean, Date/Time, Statistical, Database, Lookup and Reference formulas. Developers can use these formulas using API or Designer Spreadsheets. Adding Formulas & Calculating ResultsĪspose.Cells supports most of the formulas or functions that are the part of Microsoft Excel. It can not only re-calculate the formula imported from the designer file but also supports to calculate the results of formulas added at runtime. Formula calculation engine is embedded in Aspose.Cells.
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