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RV

I have a table created like below. t:([]c: 30 40 25 20 4 4; c1: 10 20 5 25 5 4) c2 is calculated Column (value from c1 or prev c2 is used based on evaluation). prev value is taken as 0 for first row / if not available Below are the calculations. c c1...

RV

Hello experts, Use below steps to replicate this issue. Start new kdb+ process. C:\q\w32\q.exe Make the process listen to port 10000. \p 10000 Create a variable and assign some value. a:10 Start a new kdb+ process which listens on port 10001 C:\q\w32...

RV

Hello q experts, I have a table created like below. t:([]c1: 1 2 3 4 5 6 7 8 9) Below statement works fine as I am using previous value of column c1. update c2:((prev(c1)+10) + c1)%2 from t If I try to use previous value from column c2, then there is...

RV

I was trying out KXDashboards-1.4.1. Today when I tried to start it; got a message asking to download the new version. I have downloaded KXDashboards-1.4.2. How do I get my old dashboards back to the new version?

RV

When I double click / click on a data grid I am able to trigger open URL. Is it possible to call Java script code with selected value from the data grid? I am trying to pass the selected value from the data grid to an external application.

RV

Thanks for confirming. I checked both solutions and the result column matches exactly for my bigger data set.

RV

I was trying something like below. I am not sure if it works in all scenarios. I will validate your solution as well and revert soon. Thanks much for your patience. KX community support and response is just excellent  update c2: {?[((y>x)|(z

RV

Somehow not being able to use the previous calculated value of c2 directly is causing fallout for different combination of data. Last value of c2 will be 4 as per the logic but we get 3.5 t:([]c: 30 40 25 20 4 4 4.5 4.5; c1: 10 20 5 25 5 4 3 3.5) c c...

RV

Thanks rocuinneagain, Works for most scenarios. I have added one more row at the end where I get a different result than expected. The value for c2 in last row should be 4 instead of 3. t:([]c: 30 40 25 20 4 4 1; c1: 10 20 5 25 5 4 3) c c1 c2 c1>prev...

RV

Thank You very much for this initiative . Looking forward to this. In addition to set challenges; it would be nice to have some small real time use cases that we can work on, based on the learnings. Thank You.

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Accessing previous calculated value from a column in current row

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KX Dashboard - Data Grid - Actions - Is it possible to call Java script code with selected value?

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