Stock Data Types Wont Refresh - Provides Erroneous Error Message
I have an Excel workbook I created a few months ago and this afternoon while I was away, the "stocks" data type refresh feature stopped refreshing. The error message I receive instructs me to sign in to an account associated with this product (Excel), but I am clearly signed in. To be sure, I sign out and sign back in. Hit 'refresh' and receive the same error message. MS tech support tried to make a manual repair during a chat session, but it still will not refresh. Any thoughts? Thanks in advance.Excel Online - All Sheets Menu Option Greyed out.
Hello - I have an issue where the Excel Online is showing the All Sheets Menu greyed out for all excel sheets. This was not an issue yesterday. The only way Ive found to turn it back on was to Activate Viewing Mode, then flip it back to editing mode which should not be the way its done, if yesterday it worked just fine when i opened the file. How do i get the All Sheets button to turn back on permentantly?A generalised Lambda helper function that return arrays of arrays using bisection.
Specifically this required days of the week to be sorted by multiple price criteria. [This is intended as a topic for discussion as opposed to a specific request for help] I used the problem to develop a Lambda function that uses a binary tree to select the rows at the leaf nodes and perform a straightforward sort. The results then get stacked pairwise until the blue table of results is returned BYROWλ "Applies a user-defined function by row and collects array results into a stacked array" =LET(resultϑ, BYROW(array, ThunkFnλ), BinaryTreeλ(ROWS(resultϑ), "", Derefϑarrλ)) The main bisection recursion is hidden from the user BinaryTreeλ "Generates binary numbers stacking blocks pairwise to an upper limit" =LET( maxNode, BASE(nodeCount - 1, 2), maxLevel, LEN(maxNode), level, LEN(parentNode), maxChild, LEFT(maxNode, 1 + level), IF( level < maxLevel - 1, LET( childNode0, BinaryTreeλ(nodeCount, parentNode & 0, FNλ), childNode1, BinaryTreeλ(nodeCount, parentNode & 1, FNλ), IF((parentNode & 0) = maxChild, childNode0, VSTACK(childNode0, childNode1)) ), IF( (parentNode & 0) = maxChild, FNλ(parentNode & 0), VSTACK(FNλ(parentNode & 0), FNλ(parentNode & 1)) ) ) ) but it is intended to non-problem specific and hence reusable. A key feature is that the user provides a Lambda function that performs the required calculation as if BYROW would return the result, but the function is converted to one the returns a thunk and hence avoids the array of arrays problem. ThunkFnλ "Accepts a user-defined Lambda function that returns an array result and generates a related function that returns the corresponding thunk" =LAMBDA(arr, LAMBDA(userFnλ(arr))) Finally Derefϑarrλ "Dereferences a term from a thunk array using a zero-based binary pointer and expands the resulting scalar thunk" =INDEX(resultϑ, DECIMAL(ptr, 2) + 1, 1)() converts the binary node pointer to a decimal index. This is all crazily heavy but, hopefully, would be simple to reuse for other problems since the main processing is problem independent.
Solving 'The Assignment Problem' with Lambda
The Setup The problem is simple. Given a 'cost matrix', assign tasks to workers to minimize total cost needed to complete the tasks. Workers may not perform more than 1 task. Assignment problem - Wikipedia Methods for Solving The Hungarian algorithm is a very popular method for solving the problem. I don't think this method is transferrable to Excel and would not be capable of generating multiple solutions where there are ties for lowest cost. Hungarian algorithm - Wikipedia I believe another approach to solving the Assignment Problem is to essentialy generate all possible solutions to solving the rook's problem/rook polynomial. Rook polynomial - Wikipedia Excel solution I think my solution takes some inspiration from the rook's problem. My goal was to generate all possible combinations and then take only ones with minimal 'cost'. For this problem I built my solution to accomodate the addition of more 'workers' but locked the tasks at 3. Expanding the tasks beyond 3 is maybe something best handled in part by Python's itertools (A subject for another adventure!). Discussion I welcome any alternative approaches to solving this problem and/or any refinements to my solution. Attached you will find a workbook with the original cost matrix and a larger cost matrix for testing purposes. Happy Holidays! 'Solve =LAMBDA(staff,cost_matrix,LET( r, ROWS(staff), c, COLUMNS(cost_matrix), counter, SEQUENCE(r), GenerateCombin, LAMBDA(a, v, LET( taskA, EXPAND(v, PRODUCT(r - 1, r - 2), , v), filtered, FILTER(counter, counter <> v), taskB, TOCOL(filtered * SEQUENCE(, r - 2, 1, 0)), loop, LAMBDA(acc, val, LET( vector, TOCOL(FILTER(filtered, (filtered <> v) * (filtered <> val))), VSTACK(acc, vector) ) ), taskC, DROP(REDUCE("", filtered, loop), 1), VSTACK(a, HSTACK(taskA, taskB, taskC)) ) ), combin_matrix, DROP(REDUCE("", counter, GenerateCombin), 1), staff_matrix, INDEX(staff, combin_matrix), val_matrix, INDEX(cost_matrix, combin_matrix, SEQUENCE(, c)), totals, MMULT(val_matrix, SEQUENCE(c, , 1, 0)), lowest, MIN(totals), stack, DROP(HSTACK(staff_matrix, val_matrix, totals), , -1), filtered_stack, TOCOL(FILTER(stack, totals = lowest)), wrapped, WRAPROWS(filtered_stack, c), IFERROR(VSTACK(Tasks, wrapped), "-") ))Excel Community: Simplifying Spaces and Labels
Hi all, As you may have noticed already, we as the Excel Team have done a bit of "spring/summer cleaning" for the community. We have received feedback that the number of "spaces" was simply too many at nine, so we have pared things down. Now, there are three community spaces: Excel: this will be the primary place for posting content, as many of the old spaces have been migrated as labels will find a good home here BI and Data Analysis: this will be a good place for posting about tasks and questions that cut across Excel, Power BI, and other topics in this realm Resources and Community: this will increasingly become a place for folks to share sample files and templates with each other Q: What happened to the other spaces that used to exist? A: They have since been rolled up as "Labels", which you can find in the "More Resources" sidebar under "Labels" of any of the three spaces mentioned above. Look for these on the right side: Please let us know if you have any other questions. Thanks for reading!
Excel 365 on Mac - Issue with refreshing data types
I am getting error message "couldn't refresh data types, we need to fix your account, sign out and sign in again. I am getting this message after upgrading to MacOS Ventura 13. signing out and signing in again didn't resolve, anyone facing similar issues. Do we have a resolution to this Regards RameshFIFA World Cup 2022. A demonstration of Lambda functions.
2022 FIFA World Cup Qatar Free Predictor Template For Excel (spreadsheet1.com) Again, this year I worked with Petros to produce an update for the 2022 FIFA World Cup. The striking thing was that so much has changed within Excel since 2018. The formulae to reduce the Group results table to Group standings was entirely reworked to remove helper arrays and instead use 24 lines of Excel formulas resulting in the final form Analyseλ(Matches) which was then applied to each of the other groups without modification. The description is found by following the link LAMBDA Functions Explained Please click here to learn how our World Cup 2022 Qatar template is made. Your comments are invited on the Spreadsheet1 site but perhaps this is the place for informed comment on Lambda (rather than soccer)!Excel's stock data type can't find several stock exchange indexes (i.e: FTSE, CAC 40, Hang Seng...)
I noticed by searching around that this is a topic that has been asked quite a bit with no clear answers that get to bottom of this issue. I'm well aware the Excel data types feature is still a work in progress, but by now the dev team could've done a better job on this one. The data selector search tool for instance couldn't be any worse - it really SUCKS!!! So, this is a list of mainstream stock exchanges that Microsoft claims they are supported according to the link below, but I've tried every possible code/ticker related to them that I could and no sucess at all to have them linked to Excel data types. About the Stocks financial data sources Index Exchange Country Codes/tickers attempted AEX Euronext Amsterdam Netherlands AEX, XAMS CAC 40 Euronext Paris France CAC 40, CAC40, PX1, XPAR FTSE MIB Borsa Italiana Italy FTMIB, MIB, FTSE MIB, XMIL FTSE 100 London Stock Exchange United Kingdom FTSE, FTSE100, FTSE 100, UKX, XLON Hang Seng HKEX - Hong Kong Exchanges Hong Kong HSI, Hang Seng, XHKG IBEX 35 Bolsa de Madrid Spain IBEX, IBEX35, IBEX 35, BMEX MOEX Russia MOEX - Moscow Exchange Russia MOEX, IMOEX, MISX FTSE JSE SA Top 40 JSE - Johannesburg Stock Exchange South Africa JSE, FTSE JSE, FTSEJSE, JTOPI, XJSE Kospi KRX - Korea Exchange South Korea KS11, KOSPI, KRX, XKRX IPC Grupo BMV Mexico IPC, MXX, XMEX And come on, we're mostly talking about MAJOR exchanges here, and that are supported by this service according to Microsoft's own support page, so there's no excuse that no one can't find them for crying out loud!!!
