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Support Chat Session (07/24/07)
4:43 pm:--Topic-- Welcome to Linn Software's chat room. http://www.Linnsoft.com
4:43 pm:<LS_Bill> hello everyone
4:43 pm:<LS_Bill> sorry I'm late today
4:43 pm:<LS_Bill> Chad is on vacation this week
4:44 pm:<LS_Bill> let me know if you have any questions or anything you want to discuss, just fire away
4:44 pm:<Cliff> no problem
4:45 pm:<Cliff> bill, do you mind a bit of random exploration of mpd and reference lines
4:45 pm:<Cliff> first ?, can alarms be set on lines drawn using MPD
4:47 pm:<LS_Bill> yes
4:47 pm:<Christine> Hi Bill...one quick ?....Does latest version now read IB opening prices if I start IRT after the open?
4:48 pm:<Cliff> I'm not seeing that option in the MPD dialog; how does one do it?
4:48 pm:<LS_Bill> so you have MPD used in a custom indicator assigned to a ref line
4:48 pm:*** EJM has joined us
4:48 pm:<LS_Bill> ref lines can be pegged to V# variables, or to market data values, or to a custom indicator
4:49 pm:<Cliff> or to a custom price also?
4:49 pm:<LS_Bill> yes
4:49 pm:<LS_Bill> a custom price is just a special case of a custom indicator
4:49 pm:<Cliff> I'm still tinkering with best way to create that set of reference lines I wrote to you about where I'll be referencing the highest hi and lowest lo of prior 3 days
4:50 pm:<LS_Bill> so you want to use daily bars for that calculation?
4:50 pm:<LS_Bill> and put the ref line into an intra-day chart
4:51 pm:<LS_Bill> so your CI would reference MPD
4:51 pm:<Cliff> I would think that would be best way to do it Bill, no need to be any more granular than that
4:51 pm:<Cliff> it could
4:51 pm:<LS_Bill> the MPD setup would reference DAILY periodicity and the STATistics indicator
4:51 pm:<Cliff> or I'm thinking I could create a custom price
4:51 pm:<Cliff> a set of custom prices
4:52 pm:<LS_Bill> ok
4:53 pm:<LS_Bill> STAT would reference DAILY data even though the CI is running inside an intraday chart
4:53 pm:<Cliff> What do you think is best here Bill in terms of accuracy and reliability
4:53 pm:<LS_Bill> then the ref line would plot at the computed value
4:54 pm:<LS_Bill> mark the "action" checkbox in the ref line setup and setup the signal action to alert you when the line is broken
4:55 pm:<Cliff> so the reference line references the custom indicator/price and you set the alarm on the reference line, correct?
4:55 pm:<LS_Bill> yes
4:56 pm:<Cliff> so do I actually need MPD or can I just use STAT
4:56 pm:<Cliff> ?
4:56 pm:<LS_Bill> if the CI just uses STAT alone, then the CI will run on the data inside the chart (intra-day data)
4:56 pm:<Cliff> OK, I see
4:58 pm:<Cliff> but in STAT it looks like you have the option of specifying number of days back
4:58 pm:<LS_Bill> that's days of intra-day data
4:58 pm:<Cliff> right highest intraday hi of past 3 days would be same as highest hi of past 3 daily bars
4:59 pm:<LS_Bill> that's bars actually, not days
4:59 pm:<LS_Bill> last 30 bars, last 3 bars in the STAT setup
4:59 pm:<LS_Bill> or you can specify a starting date time
5 pm:<Cliff> right that's what I'm seeing
5 pm:<LS_Bill> MPD of STAT would just fetch 3 daily bars and give you the highest hi
5:01 pm:<Cliff> since I'm going to need IRT to do some modest math to calculate these reference lines, I'm guessing it would be more efficient just to use daily bars for past 3 days
5:02 pm:<LS_Bill> yes
5:02 pm:<LS_Bill> there is some overhead loading the bars but going thru all that intra-day data is overhead too
5:04 pm:<Cliff> btw, bill, when I update my daily bars at night will the position of these lines automatically adjust to reflect the most recent day's data
5:05 pm:<LS_Bill> thats a tricky question
5:05 pm:<Cliff> how so?
5:05 pm:<LS_Bill> normally updating daily bars does not trigger a recalc of intra-day charts
5:05 pm:<LS_Bill> in this special case, IRT does not dig into each chart to see if it is dependent upon daily bar data
5:05 pm:<Cliff> so how do I force a recalc of these lines
5:06 pm:<Cliff> interesting
5:06 pm:*** Christine has left
5:06 pm:<LS_Bill> hold down the shift key and click the download button will force a recalc of all indicators in the chart
5:06 pm:<Cliff> so right now the only way to do this is on a chart by chart basis?
5:07 pm:<LS_Bill> yes
5:07 pm:<Cliff> would implementing your original suggestion of using V# variables get around this?
5:08 pm:<Cliff> you suggested running a schedule I believe to recalculate the values after daily bar updating and then plotting the V# variables
5:08 pm:<LS_Bill> yes, in that case, running a scan that SET's V#
5:09 pm:<Cliff> I guess the question here is whether the new V# variables will redraw the lines
5:09 pm:<LS_Bill> the act of setting a V# triggers update of charts having ref lines dependent on that V#
5:09 pm:<LS_Bill> as I recall, it's been a long time since I've tested that feature
5:10 pm:<Cliff> so this way, in effect, I could be sure that any chart I open already is displaying the correct reference lines
5:10 pm:<Cliff> could I not (assuming the feature works the way you recall)?
5:11 pm:<LS_Bill> yes, easy enough for you to test Cliff
5:11 pm:<Cliff> I'll check it out
5:11 pm:<Cliff> could you expand just a bit on your statement above that custom prices are just a special case of custom indicators?
5:12 pm:<LS_Bill> You can also do some things with schedule actions
5:12 pm:<Cliff> sounds like an important concept for users to understand
5:12 pm:<LS_Bill> if you have a set of chart names you typically use
5:12 pm:<Cliff> OK, keep going
5:12 pm:<LS_Bill> you could have a schedule and an associated function key shortcut to recalc each chart in your layout
5:13 pm:<LS_Bill> so press F2 and the schedule issues a "recalc chart" on half a dozen chart names
5:13 pm:<Cliff> interesting, what schedule function would I use
5:15 pm:<LS_Bill> just looking at that
5:16 pm:<LS_Bill> the recalc indicator is a function key shortcut
5:16 pm:<LS_Bill> that applies to the front chart
5:16 pm:<LS_Bill> so what you would have to do is have a series of "Open Chart" actions
5:16 pm:<LS_Bill> each followed by "execute keyboard shortcut" to recalc indicators
5:17 pm:<LS_Bill> the Open Chart action just brings the chart named to the front
5:17 pm:<Cliff> OK, but when all is said and done, don't I end up with all my charts moved out of place, even thought they're updated
5:18 pm:<Cliff> though, not thought
5:18 pm:<LS_Bill> so when the schedule runs, you would see each chart brought front most in turn, the line repositioned, etc.
5:18 pm:<LS_Bill> yes, that charts in question all end up in front, but occupying the same screen coordinates
5:18 pm:<Cliff> but then I'd have to manually reposition the charts in my layout, correct
5:18 pm:<LS_Bill> same screen coordinates
5:20 pm:<Cliff> so if they occupy the same screen coordinates, they'd actually be in the same place they were?
5:20 pm:<LS_Bill> assuming your charts do not overlap with other non-chart window, they would all still be in place
5:20 pm:<Cliff> cool
5:21 pm:<LS_Bill> yes, the Open Chart schedule action does not "center" the chart, just brings the chart "to the front" if it is already open
5:21 pm:<LS_Bill> make it the current chart so that the keyboard shortcut applies to it
5:21 pm:<Cliff> though looks like the V# solution, if it works the way you think it does, would be easier as then whenever I open a chart the lines would be in the correct position on the chart, yes
5:22 pm:<LS_Bill> since this recalculation is something you do once a day, that would appear to be the best solution yes.
5:22 pm:<Cliff> Bill, when you say make it the current chart doesn't opening it make it the current charts
5:24 pm:<LS_Bill> yes, if the chart is not already open, it will be opened as the current chart
5:24 pm:<Cliff> and if it is already open?
5:24 pm:<Cliff> as it would be in the layout example you were citing a moment ago
5:24 pm:<Cliff> ?
5:25 pm:<LS_Bill> if already open, it would become the front window and the current chart also
5:26 pm:<Cliff> OK, so open or not, when an open command is issued by the schedule we were contemplating it will be current and the recalc command would automatically apply to it, correct?
5:26 pm:<LS_Bill> y
5:26 pm:<Cliff> cool,
5:26 pm:<Cliff> thanks for your thinking here, you've introduced some novel and helpful approaches
5:27 pm:<Cliff> could you address the custom price as a special case of a custom indicator, see me at 5:12
5:29 pm:<LS_Bill> a custom price is just a custom indicator
5:30 pm:<Cliff> right but as you mentioned a special case of a CI
5:30 pm:<Cliff> I'm just wondering in what respect(s) it's special
5:31 pm:<LS_Bill> the price can be specified in a variety of places other indicators
5:32 pm:<LS_Bill> and for example, in Custom Indicators
5:33 pm:<subq> hey bill, did Chad tell you about the reference line bug?
5:33 pm:<LS_Bill> you could create a sum of some custom price on some set of instruments
5:33 pm:<subq> all my reference lines are showing -4.29b
5:33 pm:<subq> had one other report of it from a friend
5:33 pm:<LS_Bill> and view that was a custom instrument
5:33 pm:<LS_Bill> and do analysis on it
5:33 pm:<subq> his are showing diff number but still stuck
5:33 pm:<LS_Bill> yes, subq
5:33 pm:<subq> oh ok
5:33 pm:<LS_Bill> these are huge numbers, too big for IRT to display
5:34 pm:<subq> it is in release version so just wanted to make sure you guys knew
5:34 pm:<subq> my numbers aren't even that big
5:34 pm:<subq> -2000
5:34 pm:<subq> http://www.charthub.com/images/2007/07/24/nyse_net_issues_1t.png
5:34 pm:<LS_Bill> are you reporting that the value shows correctly in 8.7.2 but not in 8.8
5:34 pm:<subq> or -3000, still shows -4.29b
5:35 pm:<subq> nope just reporting it shows incorrectly in 8.8
5:35 pm:<subq> it did show correctly before 8.8
5:35 pm:<LS_Bill> can you post a def for that chart?
5:36 pm:<subq> sure one sec
5:43 pm:<LS_Bill> I'll take a look, it does seem to be a bug
5:54 pm:<LS_Bill> I found the problem, had to do with displaying the number as a whole number, this was not working right for negative values in ref lines
5:55 pm:<LS_Bill> this will be fixed next week when 8.8 Rev 1 goes out
5:55 pm:<LS_Bill> in the meantime
5:55 pm:<subq> nice
5:55 pm:<LS_Bill> you could revise your CI to use ABS
5:55 pm:<subq> its not a huge deal for me anyway I can see where the number is...but I guess for some it is
5:55 pm:<LS_Bill> no that wouldn't work
5:56 pm:<subq> I can live with it as is until fixed
5:56 pm:<LS_Bill> ok, good
6:04 pm:<LS_Bill> http://www.charthub.com/images/2007/07/24/nyse_net_issues_1t_3.png
6:04 pm:<LS_Bill> got to run, have a nice evening everyone
6:05 pm:<subq> night, have a good one
6:08 pm:<LS_Bill> night