Private Declare PtrSafe Function QueryPerformanceCounter Lib "kernel32" (lpPerformanceCount As UINT64) As Long Then I realised that if I could get a good enough timer in VBA by hooking into some of the underlying Windows functionality I could get soe decent timing by wrapping each of the calls in a VBA call. I tried to log the performance by passing in a cell to a Python macro function in PyXLL but as PXLL support informed me if that is called from another cell, then the calculation tree is already going and it wont work. # print('Num of CPUS: '.format(duration)) # lets leave one spare for OS related things so everything doesn't freeze up Reminds me of this :įrom pyxll import xl_menu, xl_app, xlcAlert, calc_pi_numba(num_attempts: int) -> float: I had many many python installs across different versions, both Pip and Anaconda and 32bit 3.7 and 64 bit 2.7 etc. However this really wasn’t PyXLL’s fault. I am glad I waited to finish off this blog piece, as I found the inital set up of this a nightmare. I use 64bit Python so I have to uninstall and re-install Office to not mix bit-ness between them. Well I don’t use it much at home and it turned out I have 32 Bit office installed on my machine. However from homebrewing solutions there seem to be two main contenders I have found that I would like to try out. Mainly routing through the COM layer and into C++ and with the calling of Python tacked onto the side of that. I have been spoilt by the banks I work for doing all of this within their existing Quant Library. What would be interesting is to re-use this Python code, in its existing form and try to call this from VBA and see if we still get the performance benefit. However we know from Phase III that numba will massively speed things up. About twice the speed of Native python without any tweaks. We guarantee a connection within 30 seconds and a customized solution within 20 minutes.20 Me.Range("CalculatedPi").Value2 = CalcPiMonteCarloVBA(Me.Range("Simulations").Value2, TimeTaken)ģ0 Me.Range("TimeTaken").Value2 = TimeTakenĥ0 MsgBox Err.Description & " occured on " & Erl, vbCritical, "Error in CalcPiMonteCarlo_Click"Īs can be seen in the Photo compared to Python itself the performance is none too shabby. If you want to save hours of research and frustration, try our live Excelchat service! Our Excel Experts are available 24/7 to answer any Excel question you may have. Most of the time, the problem you will need to solve will be more complex than a simple application of a formula or function. Instant Connection to an Expert through our Excelchat Service Notice that in the above formula, we have 3 as our radius. We have simply multiplied it by 2 and 3 as shown below In cell C7 in figure one, we have used the pi function to get the circumference. But if you have some more data that you want to use together with pi, then you can proceed. To just find the value of pi in Excel, you can press enter once you have finished with step 2 above. Without the brackets, the pi function will return a #NAME? Error. Notice that in figure 2 above, we have put the Excel pi function together with two parenthesis. All you need to do is type the pi formula with other formulas that you are using. This should not be as difficult as many would want to believe. Most Excel users do not know how to put pi in Excel. In our example in figure 1 above, we are just dealing with pi without necessary having a lot of data accompanying it. Have columns of all the data that you intend to use when calculating whatever you want using pi. The first thing that you need to do is to first prepare your mathematical data in a spreadsheet. But do you know how to write pi in Excel ? This post provides a clear guide on how one can insert pi in Excel when dealing with mathematical calculations.įigure 1: The pi function Step 1: Prepare your data The Excel pi is the most used function when we are calculating things like circumference, areas of circles and more. As we use Microsoft Excel for our mathematical calculations, we can utilize the constant pi to help us along the way.
0 Comments
Leave a Reply. |