HOW TO CODE A simple IF

[jcostac69]

I just want a scanner to identify stocks that are down either 2,3,4 or 5 days in a row. In order to do that, a PARAMETER is required to tell how many days I want to check.

How would you do that?

Thanks in advance for any help.

 

[MerryDay]

@jcostac69
You can create a custom study based on your scan filters. In a custom study, you can pass through parameters using an input statement.
Then you set up the scanner referencing the custom study.

Someone can provide the exact solution you are looking for if you edit your post to include an image of your scan.
How To Post Images In Your Post
HTH

 

[generic]

@jcostac69 Try this. You can adjust the scan under each case if you need to.

input c = close;
input days = {default "TWO", "THREE", "FOUR", "FIVE"};
plot scan;
switch (days) {
case "TWO":
    scan = c < c[1] and c[1] < c[2];
case "THREE":
    scan = c < c[1] and c[1] < c[2] and c[2] < c[3];
case "FOUR":
    scan = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4];
case "FIVE":
    scan = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4] and c[4] < c[5];
}

 

[jcostac69]

Thanks, I have done something similar. But I want something like a PREFILTER in the same code. Could even be a second and or third previous CASE.

i.e Say I want To filter the stocks that are down 50% (a parameter) or more this year since January, went down more than 10% (parameter also) in last X consecutive days (parameter) and have a letter A or B in the symbol. Last one is a nosense filter, I know.

But do all that in just ONE CASE will be a very long condition. And what about if one of the filters is an OR condition.

I hope I got the right explanation.

Regards.

 

[generic]

@jcostac69 So you want to add more conditions to the scan? If you are then change the plot to def and add your new conditions, 50% down/10% down, and plot the scan. Hope I understood what you meant and what I said makes sense.

input c = close;
input days = {default "TWO", "THREE", "FOUR", "FIVE"};
def bar;
switch (days) {
case "TWO":
    bar = c < c[1] and c[1] < c[2];
case "THREE":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3];
case "FOUR":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4];
case "FIVE":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4] and c[4] < c[5];
}

##Filter code##

plot scan = bar and #filter condition#;

 

[MerryDay]

@jcostac69 again, an image of your scan would be wipe out a dozen posts of you trying to use words to tell us what you are doing.

 

[jcostac69]

@jcostac69 So you want to add more conditions to the scan? If you are then change the plot to def and add your new conditions, 50% down/10% down, and plot the scan. Hope I understood what you meant and what I said makes sense.

input c = close;
input days = {default "TWO", "THREE", "FOUR", "FIVE"};
def bar;
switch (days) {
case "TWO":
    bar = c < c[1] and c[1] < c[2];
case "THREE":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3];
case "FOUR":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4];
case "FIVE":
    bar = c < c[1] and c[1] < c[2] and c[2] < c[3] and c[3] < c[4] and c[4] < c[5];
}

##Filter code##

plot scan = bar and #filter condition#;

Dear Generic:
Thank You, you gave enough lights to clear my path.

https://imgur.com/a/pMQQtEP