# using networkdays with blank cells

#### sooroo

##### New Member
I am trying to get some help regarding a report I'm trying to create. There are many columns of dates - basically tracking at what stage the different projects are at. Some projects only have a few dates filled in, and some have the majority filled in.

I'm trying to find the cycle times of each phase of the project, but sometimes there are empty cells because the phase/project has not been completed yet. I am trying to find a way to replace an empty cell with today's date so that I can figure out the current cycle time of the entire project, as well as each phase.

I thought that I could do a formula that tested if the cell is empty, and if the cell was empty, I could replace it with today's date. However, I have 2 problems - 1. I don't know how to test if a cell is empty when writing a formula. The only approach I could find was if(X2=" ") for non blank cells. 2. I am a novice to networkdays, so I don't know if this formula is being overtaxed.

One of my meager attempts was to try:
=IF(X2=" ","NA",NETWORKDAYS(X2,IF(Y2=" ",Y2,TODAY()),'Holiday Dates'!\$A\$1:\$A\$9))

X2=Date In
Y2=Date Out

Thanks to anyone for their insights

### Excel Facts

Why does 9 mean SUM in SUBTOTAL?
It is because Sum is the 9th alphabetically in Average, Count, CountA, Max, Min, Product, StDev.S, StDev.P, Sum, VAR.S, VAR.P.

#### Andrew Poulsom

##### MrExcel MVP
This:

=IF(X2=" "

is testing for a space, not a blank cell. It should be:

=IF(X2=""

#### sooroo

##### New Member
Amazingly everything works now! Thanks so much!

I'm not worthy! ray:

#### sooroo

##### New Member
Uh Oh

I spoke too soon. Everything is still fine with this solution, but now I need to find out the code for non blank cells.

If X="" means a blank cell, does X="*" mean a nonblank cell?

In what context?

you could try

x<>""

#### sooroo

##### New Member
For the If then statement I was trying to formulate earlier.

=IF(H2="","NA",IF(I2="",NETWORKDAYS(H2,TODAY(),'Holiday Dates'!\$A\$1:\$A\$9)-1,"Done"))

If I wanted to substitute IF(H2="") blank cell for a non blank cell, what would be the correct syntax?

#### barry houdini

##### MrExcel MVP

as suggested above..

=IF(H2<>""........

<> means "does not equal"

#### sooroo

##### New Member
Thanks

Thanks so much for the info. Everything is working now.

Is there a place in Microsoft help or somewhere else that I can get all those operators so I can reference in the future? I looked all over Microsoft's website and help function and I couldn't find anything.... it's possible that I was phrasing my search incorrectly, though...

#### Greg Truby

##### MrExcel MVP
You don't indicate which version of Excel you're using, but at least for XL2003, if you just open help from the menu (don't use the search box) and expand the options, the chain is:<ul>[*]Table of Contents<ul>[*]Working with Data<ul>[*]Formulas<ul>[*]Creating Formulas<ul>[*]About Calculation Operators[/list][/list][/list][/list][/list]HTH

#### Scott Huish

##### MrExcel MVP
The way I was taught a long time ago to remember that this <> is not equal to, is that technically it means less than or greater than, because you can combine comparison operators (i.e. >= greater than or equal to, <= less than or equal to).

Thinking about this using numbers, if it is greater than or less than a number, it can't be equal to it (not equal to).

Hope that helps.

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