Refreshing EFS OHLC Data

[Musashi]

Hi

I know how to refresh the advanced chart data

"Refreshing Advanced Charts
Hold down the CTRL button on your keyboard; then click on the green OK with your mouse. The green OK is located in the Cursor Window, and it is known as Server Status Bar."

But when I start Esignal many times the simple EFS for the open/High/Low/Close does not load this data and has , Loading Data...

Refreshing the chart does not retrieve this EFS data, how can I get it to reload this EFS OHLC data without restarting Esignal?

Thanks
Musashi

[eSignal_AveryH]

Musashi,

Can you post the formula? Also does the not loading happen with all of you're EFS studies or just this one?

You can reload or refresh the EFS studies you have on the charts by using the right click menu and Reload or [b]Chart Options--> Reload[b] off the main menu on the top of eSignal.


AveryH
eSignal Support

[Musashi]

Hi ahodgee

It is the esignal supplied efs - Under OHLC- getPrevOHLC.efs

When they don't work its for one or two symbols.
Say I'm opening a page with ES NQ ER and the EFS mentioned will fail to load for the ES for example and all ES charts will show ,Loading Data... even though price data has finished downloading. NQ ER charts will load fine.

I have tried the reload and remove reload etc

Restarting Esignal corrects the problem, may need a few goes. Happens more when your severs seem to be 'under a heavy load'

If the symbol is ES #F and I type in ES U8 it can get the data for the EFS for ES U8.

So the EFS date request to the server is timing out and I'm looking for a way to refresh it.

[eSignal_JasonK]

Hello Musashi,

Please post the code that you have so that we can see what exactly is happening. The EFS you’re working with would require some modifications to plot any information. The version that comes with the installer is only intended to be called by other formulas and is not designed to plot anything as a stand-alone formula. Also, please confirm which version of eSignal you are using.

[Musashi]

My apologies Jason

Esignal 7.91 (Build 738)

/******************************************************************************************
Copyright © eSignal, a division of Interactive Data Corporation. 2005. All rights reserved.
This sample eSignal Formula Script (EFS) may be modified and saved under a new filename;   
however, eSignal is no longer responsible for the functionality once modified.             
eSignal reserves the right to modify and overwrite this EFS file with each new release.    
@version 3.0 by Alexis Montenegro for eSignal                                              
*******************************************************************************************/

function preMain() {
    setPriceStudy(true);
    setStudyTitle(" ");
    setCursorLabelName("PD-O", 0); // Open
    setCursorLabelName("PD-H", 1); // High
    setCursorLabelName("PD-L", 2); // Low
    setCursorLabelName("PD-C", 3); // Close

    setDefaultBarStyle(PS_DOT, 0); // Open  
    setDefaultBarStyle(PS_SOLID, 1); // High  
    setDefaultBarStyle(PS_SOLID, 2); // Low   
    setDefaultBarStyle(PS_SOLID, 3); // Close 

    setDefaultBarFgColor(Color.RGB( 0, 115, 0 ), 0);        // Open  
    setDefaultBarFgColor(Color.RGB( 247, 238, 0 ), 1);    // High  
    setDefaultBarFgColor(Color.RGB( 247, 238, 0 ), 2);    // Low   
    setDefaultBarFgColor(Color.red, 3);    // Close 

    setDefaultBarThickness(1, 0); // Open  
    setDefaultBarThickness(2, 1); // High  
    setDefaultBarThickness(2, 2); // Low   
    setDefaultBarThickness(1, 3); // Close 

    setPlotType(PLOTTYPE_FLATLINES, 0); // Open  
    setPlotType(PLOTTYPE_FLATLINES, 1);    // High  
    setPlotType(PLOTTYPE_FLATLINES, 2);    // Low   
    setPlotType(PLOTTYPE_FLATLINES, 3);    // Close 
}

var bInit = false;
var xOpen = null;
var xHigh  = null;
var xLow   = null;
var xClose = null; 

function main() {
    
    if(isMonthly() || isWeekly())
    return;
    
    if(bInit == false){
        xOpen  = open(inv("D"));
        xHigh  = high(inv("D"));
        xLow   = low(inv("D"));
        xClose = close(inv("D")); 
        bInit = true;
    }
    
    var vOpen  = xOpen.getValue(-1);
    var vHigh  = xHigh.getValue(-1);
    var vLow   = xLow.getValue(-1);
    var vClose = xClose.getValue(-1); 
    if(vOpen == null || vHigh == null || vLow == null || vClose == null)
    return;
    
    
    return new Array (vOpen,vHigh,vLow,vClose); 

[eSignal_JasonK]

Hello Musashi,

The code you have posted is a slightly modified version of \OHLC\PreviousDayDailyBars.efs. The current installer version is attached. However, after adding the missing end brace for main() to the code you've posted, the study appears to be working fine.



Here's a couple things for you to try.

1. Try using a time template that limits the amount of data being loaded by the chart.

2. Try creating a new page with only a single chart and test the formula. If the problem does not appear, then it means you could possibly have a corrupted chart file. The first thing to do is create new charts in your page and delete the current ones.

3. Try upgrading to 10.1.

[Musashi]

Hi Jason

I found a work around

1. Try using a time template that limits the amount of data being loaded by the chart.

- no change

2. Try creating a new page with only a single chart and test the formula. If the problem does not appear, then it means you could possibly have a corrupted chart file. The first thing to do is create new charts in your page and delete the current ones.

-no change

3. Try upgrading to 10.1.

- old betsy's been working fine

The work around is to first open a page with 1 clean chart, ES 1min - no efs's etc
Then open the page that is you normal workspace, 100% success rate

There seems to be some 'delay, data loss' on esignal starting and the data manager that causes the efs prev OHLC data, that is retrieved from the server to not load (note: all price data loads fine and only some symbols prev OHLC data). So by not requesting that data on startup, I avoid the problem.


Thank you for your help