Volume

[cjazz1]

Can anyone help me change the volume.efs for multiple securities so that it will plot the difference instead of the sum? For instance,
if I were to chart, (MSFT + LU) - (XOM + GE) the volume.efs will only add the volume for all four instead of subtracting the two sets of securities. Can someone please help me with this?
Thanks

[ACM]

Curt
You can find an example of how to do it in this thread.
Alex

[cjazz1]

Volume

Alex,
Thanks for the reply, but this is what I came up with.

function main() {
var MSFT = volume(0, sym("msft"));
var LU = volume(0, sym("lu"));
var XOM = volume(0, sym("xom"));
var GE = volume(0, sym("ge"));
var Vol = MSFT + LU - XOM + GE;
return Vol;
}

How can I edit this to work for these four securities?
thanks
Curt

[ACM]

Curt
I am not sure I understand what you are asking. If you run that script it will return the total volume as calculated by the equation MSFT + LU - XOM + GE.
If you look at the image below you will see that the value for Friday is 106,357,690 which is in fact the result of 69439490 + 38562200 - 24147600 + 22503600 ie the volumes of the individual symbols
Alex

[cjazz1]

Volume

Alex,
I wasn't able to get it to work. When I tried running it, I got a syntax error and says------ line 2: Parameter Number 2 of Function volume is invalid.
I'm not sure how to fix it.
thanks
Curt

[ACM]

Curt
What version of eSignal are you running? That formula uses EFS2 functions and requires version 7.9 or later
Alex

[cjazz1]

Volume

Alex,
I'm only able to run 7.8 on my system. Is there something else that I can do in order for it to work. I won't be able to install 7.9 until later next month.
Thanks
Curt

[ACM]

Curt
In the mean time you can use the following (which is based on the EFS1 functions). It will not provide you with the full syncronization offered by the EFS2 sym() function but for the most part it should return similar results (depending on symbols and intervals used)
Alex

function main() { 
var MSFT = volume(0, "msft"); 
var LU = volume(0, "lu");
var XOM = volume(0, "xom");
var GE = volume(0, "ge"); 
var Vol = MSFT + LU - XOM + GE; 
return Vol; 
} 

[cjazz1]

Volume

Alex,
I don't get accurate calculations for this efs in a one minute interval chart. Even when I add all 4 securities. How else can I edit the code in order to improve the efs.
thanks again,

Curt

[ACM]

Curt
The appropriate solution is to upgrade to 7.9.1
Alex

[cjazz1]

Volume

Alex,
My AMD Athlon has issues with 7.9 1. Could I possibly install the software components that will allow me to access EFS2. For instance, download a custom 7.9 1 and manually install the files
instead of installing the whole program?

thanks
Curt

[ACM]

Curt
I don't believe such an option is available however you may want to check with eSignal's support.
Alex

[cjazz1]

Volume

Thanks Alex for helping me to get this far. I'll call tech dept. first thing tomorrow.
thanks again,
Curt