## Expand & Interpolation

Expand & Interpolation
# 1
10-29-2013
Expand & Interpolation

Dear All,

I have input like this,

infile:
Desired output per step:

out_step01:
algorithm: expand first column with increment 1,

And then final output

out_final:

algorithm: interpolation between the known values.

I have tried using Excel but it is very time-consuming.

Excel:
Expand -> manual
Interpolation -> = (A10-A01) / (ROW (A10)-ROW (A01))

with A10 and A01 are known values ​​(column 2)

Attila
 attila View Public Profile for attila Find all posts by attila
# 2
10-29-2013
Hi,

Here is the step1st Output, will make code for step2 and update you.

Thanks,
R. Singh

---------- Post updated at 08:32 AM ---------- Previous update was at 08:23 AM ----------

Hello,

Could you please give an example for step2nd please, it will be easier for us to do it then.

Thanks,
R. Singh
 RavinderSingh13 View Public Profile for RavinderSingh13 Find all posts by RavinderSingh13
# 3
10-29-2013
Desired output

 attila View Public Profile for attila Find all posts by attila
# 4
10-29-2013
Not sure what type of interpolation you are after but linear it is not...

 wisecracker View Public Profile for wisecracker Find all posts by wisecracker
# 5
10-29-2013
wisecracker, you are right. It is linear interpolation between two point (red).

---------- Post updated at 08:52 AM ---------- Previous update was at 08:49 AM ----------

 attila View Public Profile for attila Find all posts by attila
# 6
10-29-2013
But what you show is NOT linear...

Subtract 12 from 11 gives 0.07.

BUT...

Subtract 13 from 12 gives 0.06.

This occurs more than once in all of your subsections...

Do I take it you are rounding down per iteration per subsection?
 wisecracker View Public Profile for wisecracker Find all posts by wisecracker
# 7
10-29-2013
I have tried in Excel using this algorithm:

http://support.microsoft.com/kb/214096

---------- Post updated at 09:17 AM ---------- Previous update was at 09:14 AM ----------

Intruction when using Excel:

To create a sample linear interpolation formula, follow these steps:
1. Type the following values in a worksheet:
2. Select cells A2:A6. On the Edit menu, point to Fill, and then click Down. The formula is filled down, and the following values are displayed in cells A2:A6:
 attila View Public Profile for attila Find all posts by attila

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