Make plugin, Calculate Number and Display Chart

• Project ID:

  790634

• Project Type:

  Fixed

• Budget:

  $30-$250 USD
  

Project Description:

We have some php code that allows user to enter some data. We need to make this code into a plugin? so that it can be used on the frontend to enter some data, store data in a table and then use some formulas to calculate a number for the data entered. The data entered by user will consist of (number, date) pairs and the formulas for calculation are provided below. Once number is generated we create a chart by saving entry in plotalot table so that chart can be displayed on user front end using plotalot plugin example: { plotalotid id="3"}
Once user click submit, data is saved in table and a number R is calculated from the data using the following formula:

NPV = sum [ value(i)/(1+R)^t(i) ] where value(i) and t(i) are number and time interval from table.

To calculate R, we run random tests to find NPV(R1) >0 and NPV(R0) <0

We then use following code to find R where NPV(R) =0.

// Assumption: One of f(a) and f(b) is &#8805; 0 and the other is &#8804; 0
if f(a) <= 0 then
lo := a; hi := b
else
lo := b; hi := a
endif

mid := lo + (hi-lo)/2
while (mid &#8800; lo) and (mid &#8800; hi) do
if f(mid) &#8804; 0 then
lo := mid
else
hi := mid
endif
mid := lo + (hi-lo)/2
endwhile

return mid

Skills required:

Joomla, PHP