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| VideoExtractFrames[] produces the error message: "The specified times are outside the duration of the video" even if the specified time is less than the length of the video. VideoExtractFrames[] works fine for the first few seconds, but fails with... |
| I have a list of elements to create graphs (interconnected watersheds). I added Tooltips to the list to easily identify each element. Now I want to remove the tooltips from the list or elements in order to do several operations, such as removing... |
| I am trying to use a Function in AggregateRows of Tabular data. I need to add the values of several columns of the data. I am using this expression: ColumnKeys[itersela][[i]] -> Function[ Total[ #[ ColumnKeys[itersela][[i]] ... |
| When I import files in Excel all integers are interpreted as real numbers, so I have to convert them back to integers. One solution is to first convert the file from XLSX to CSV an the import it to Wolfram. Is there an easier/faster way? |
| I am using Tabular and works very well with large databases. The problem I have is importing data from a DBF (280 thousand elements) file similar to the one attached. The DBF is an element of a shapefile produced by the National Statistics Office of... |
| I use `CloudDeploy[]` for a `Manipulate[]`, but every time I update the code, a new link is generated. How can I keep using the same link for different versions of the code? How do I know how many credits are being used? |
| I can't sort the aggregates of the following pivot table: a = { {"Grupo5", 1, 2, 3}, {"Grupo1", 4, 5, 6}, {"Grupo5", 7, 6, 7}, {"Grupo2", 8, 9, 10}, {"Grupo2", 8, 9, 10} }; SortBy[ PivotTable[ Sort[ ... |
| Is there an easy way to join the following tables, tab1 and tab2. Where: tab1 = Tabular[ { {"001", 1, 2, 3}, {"002", 4, 5, 6}, {"003", 7, 6, 7}, {"004", 8, 9, 10}, {"005", 8, 9, 10} }, {"ID", "num 1", "num 2", "num... |
| ![Stock and flow model of an inventory subject to supply and demand][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=supplyanddemandsystemdynamics.png&userId=357084 [2]:... |
| GroupBy[{{a, 1, x}, {b, 2, v}, {a, 3, y}, {a, 7, z}, {b, 2, w}}, First -> Last, Total] adds the last element or last element. How can I add the second element? |