formula

Are there any easy ways to convert mathematical formulas to Python code? Perhaps translators, web reference, specific book chapters, anything ~ For regular expressions there are programs such as Kodos and sites such as pythonregex.com , so I was hoping there would be something similar for formula notation and Python. No, this isn't possible in general. There are mathematical functions that aren't computable (for example, see wikipedia/Halting_problem ). There are other mathematical functions where it's just not obvious how to code them up (consider a difficult integral or differential

I have formula for finding monthly payment with four fields Loan Amount Interest Rate Terms of loan Monthly Payment Formula: Monthly Payment =Loan amount * ((1 + Interest rate per annum/100) ^ Term of loan) / Term of loan / 12 Now I want to find Loan Amount Interest Rate Terms of loan if any of three fields are populated. I have also formula for calculating loan amount based on interest rate, terms of loan and monthly payment. Formula: Loan amount = Monthly Payment/ ((1 + Interest rate per annum/100) ^ Term of loan) * Term of loan * 12 But it does not calculating perfect figure. Any one can

I believe the issue I am having now should be much easier in MS Excel. However, since my company uses Google Spreadsheet so I have to figure out a way. Basically, I have a cell that contains a date value like "12/19/11", and I have another cell contains a value like "DT 30". The task assigned to me is to add the value 30(days) to the date, so the result should be "1/19/2012". I did some trying in Google Spreadsheet, I have two questions. The first is to how to extract the numeric value "30" out of the string "DT 30", the second question is that, there seems to be no date add function built in

I'm using Google Spreadsheet. To illustrate my problem, I use the range A2:A8 for the data validation of D2 and E2 . But because in cell D2 , you are supposed to select an animal only, I'd like to filter the range with B2:B8 . What I've tried, is using my own formula which is : =FILTER(A2:A8;IS("B2:B8";"ANIMAL")) but this won't work and I cannot pick the "dropdown" option if I use custom formula. I've also tried my formula in my Range selection, but it's not valid. What is the right formula to use to have a dropdown with filtered data? Any thoughts? As it stands, in Google Sheets, the only way

As simple as it sounds, I just want to know how to calculate the PageViews of a site using Alexa stats. Alexa gives PageViews per-million and reach % of total Internet users, etc. I only want a formula using Alexa data to calculate it. I know, Alexa data is not exact but my problem will be solved by that. Thanks in advance. ( 10909000000 * alexa_pageView_percent ) / 30 then you'll get the rough estimate of the websites pageview in a day. Note that it is only a estimate. Its not really accurate! The alexa_pageView_percent is located in alexa traffic summary of every site down to the traffic

I was reading the documentation on R Formula , and trying to figure out how to work with depmix (from the depmixS4 package) . Now, in the documentation of depmixS4, sample formula tends to be something like y ~ 1 . For simple case like y ~ x , it is defining a relationship between input x and output y, so I get that it is similar to y = a * x + b , where a is the slope, and b is the intercept. If we go back to y ~ 1 , the formula is throwing me off. Is it equivalent to y = 1 (a horizontal line at y = 1)? To add a bit context, if you look at the depmixs4 documentation, there is one example