Error-checking formulasĪdding up columns of data or selections of cells from a sheet often results in errors due to omitting cells, wrongly specifying a range, or double-counting cells. If you insert comments in cells, and use labels and headings, a spreadsheet can later be easily modified by you or others and much time and effort will be saved. In this case it is usually easier to start again from the beginning, wasting the work done previously. Without documentation, the original purpose and methodology is often unclear and difficult to decipher.
Many users prepare a simple sheet which then develops into something much more complicated over time. Lack of documentation is a very common point of failure. Breaking complex formulas down into more manageable parts, described below, also helps to minimize errors and aid troubleshooting. What-if type calculations are also simplified: what if the exchange rate varies from 0.75 to 0.70 or 0.80? No formula editing is needed and it is clear what rate is used in the calculations. It is much easier to set up an input cell with the exchange rate and reference that cell in any formula needing the exchange rate. If you input a formula in cell C1 of =0.75*B1 (for example to calculate the value in Euros of the USD dollar amount in cell B1), you will have to edit the formula when the exchange rate changes from 0.75 to some other value. Many users set up long and complex formulas with fixed values typed directly into the formula.įor example, conversion from one currency to another requires knowledge of the current conversion rate. Incorporate a system of error-checking of formulas to verify that the formulas do what is intended Include documentation (notes and comments) describing what the system does, including what input is required and where the formulas come from (if not created from scratch) If you are setting up more than a simple one-sheet system in Calc, it is worth planning ahead a little. Functions help you create the formulas needed to get the results that you are looking for. All you have to do is add the arguments, and the calculation is made automatically. In a spreadsheet, the variables are cell locations that hold the data needed for the equation to be completed.Ī function is a predefined calculation entered in a cell to help you analyze or manipulate data. Formulas are equations using numbers and variables to get a result. To handle this situation, we use a third type of data: the formula.
Often the contents of one cell depends on the contents of other cells. However, we will not always know what the contents should be.
In previous chapters, we have been entering one of two basic types of data into each cell: numbers and text. For a more detailed list, see the application Help and Appendix A (Keyboard Shortcuts) to this guide.Ĭontrol+click and/or right-click depending on computer setup The table below gives some common substitutions for the instructions in this book.
#Open office calc does not equal symbol windows
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#Open office calc does not equal symbol license
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