Colour in area underneath a curve on a polar plot

Hi i have made a VI that shows a curve on a line, i have also made a vi that outputs a mpeg video of the graph panning through all of its values, what i was wondering was if it was possible to fill in the area within a curve? I've managed to set the line colour, but i am unable to find anywhere that lets you set area colour.
Many thanks.
John P.
VI attatched, bits cluttered, but the polar plot is clearly visable at the center.
Attachments:
Cosine Lobe Model.vi ‏98 KB

Very nice unclebump,
You get 5 stars for that one To help people new with LabVIEW I decided to attach a picture showing you where to navigate to make the change. You need to change the logic constant from false to true in the Polar Plot Data.vi (Labeled Polar Data) under the Polar Plot.vi (No Label just a picture of a polar plot). The plot comes out filled because it is a multiple line graph drawn in a picture node with the line fill option on.
Regards,
-SS
Message Edited by ShotSimon on 08-27-2008 09:25 AM
Attachments:
Polar Filled.PNG ‏50 KB

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Regression area under the curve

hello
i was trying to get the area under the curve. mathematically the
integration can b done directly from 'numeric integration' vi. but what
my problem is i cant define the time t1 to t3( as i need to set the
threshold level to eliminate noise). what i previously did was defining
the threshold level, find the 2 point of t1 and t2. but i left out the
coloured portion. using regression will it help to get t3?if yes. how
this will b done?
thanks
regards
Attachments:
graph(dt)1.PNG ‏8 KB

This has been going on for a while:
http://forums.ni.com/ni/board/message?board.id=170&message.id=226483#M226483
http://forums.ni.com/ni/board/message?board.id=MathScript&message.id=145#M145
http://forums.ni.com/ni/board/message?board.id=170&message.id=227008#M227008
If I understand this correctly, you use a threshold to find the peak, but then you want the entire area, including the "wings".
As I said before, if you pick the baseline right, your integration boundary does not need to be exact and can be significantly outside because the areas outside the peak will average to zero.
If you have a mathematical model for the peak (e.g. gaussian), you can fit it and calculate the area from the fit.
LabVIEW Champion . Do more with less code and in less time .

My problem is that after printing the first photo or picture, when I come to print a second, both the Colour Management and Epson Colour Controls are greyed out and showing No Colour Management

I have recently purchased a Mac computer (updated to Maverick) to go with my Epson Stylus Photo RX500 printer which has given excellent service with my old Windows computer. However, when trying to print pictures or photos via Photoshop Elements 11, the best results I can get are using the Colour Management and Epson Colour controls in the printing options box.
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Could there may be a setting somewhere that I need to adjust please? I have been in touch with Epson and they say that the Epson Colour controls are part of the Photoshop Elements software but a post on the Adobe forum brought no results and I am unable to contact Adobe.
<Edited by Host>

Hello Garry. Thanks for the reply. I guess I should have used a different title from "How do I post a question?" That should come after trying to resolved the colour settings first. However, to answer your question, after experimenting with all the different settings in Photoshop Elements and Epson software, I now start with PSE11 Colour settings then click "no colour management" then after clicking Print, I choose "More Options/Colour Management/Colour Handling/Printer Manages Colour" then I choose "Page Setup/Layout/Colour Matching" which then shows Epson Colour Controls but I also choose "Layout/Colour Management" which then shows "Colour Controls/Mode" I then of course choose an Epson printer profile depending on the paper I am using. I get good results but as I said, the Colour Matching and Colour Controls are then greyed out. Hope that makes sense.

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Hi,
Many printers from all vendors will not print with just one empty ink cartidge, it doesn't matter which one. Some printers allow users to print but at slower than snail speed. Whichever way, we have to have ink carridges to be able to print (even scan).
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BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Image Colour Profiles are not being applied

When I import images in to InDesign CC 2014 the embedded colour profiles are not being activated.
Therefore images are looking flat and a bit washed out on screen.
In order to apply the colour profile I have to right click on the image go down to Graphics and the colour settings and select the correct profile.
In the InDesign colour settings menu I have Colour management policies set to Preserve Embedded Profiles on RGB and Preserve Numbers (ignore linked Profiles) for CMYK. However changing these to other options makes no difference, the profile still need to be activated on each image.
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I cannot figure out why this is happening!??

Check your color settings.

How can I calculate area under a curve?

I would like to use an integral equation to obtain positive and negative areas from graphed data. For example, I have a graph representing power for a 24 hour period and want to integrate the curve to obtain daily energy.

One common way to approximate the area under a curve is to divide it into a series of trapezoids, with the area of each calculated as avg height x width. Then sum the areas.
So with this table:
x
y
trapezoid
1
0
3
2
6
11
3
16
23
4
30
39
5
48
59
6
70
83
7
96
218
You could use this formula in C2, filled down through the rest of the body cells in that column:
=IFERROR((B3+B2)÷2×(A3−A2),"")
This calculates the area of each trapezoid.
The first row is defined as a Header Row, the last row as a Footer Row. It's important not to have blank row(s) before the Footer Row. The sum formula in the Footer Row in C9 is:
=SUM(C)
Of course, the greater the number of x-y data points the better the estimate of the area under the curve.
SG

Calculating area under a curve - trapezium rule

Hi,
I'm trying to calculate the 'area under the curve' using the trapezium rule for a set of data points. i.e. I have a set of values, sampled at irregular intervals.
create table measurements (
measurement_value integer,
measurement_time timestamp
insert into measurements (measurement_value,measurement_time) values (50,TIMESTAMP'2011-01-01 00:00:00');
insert into measurements (measurement_value,measurement_time) values (40,TIMESTAMP'2011-01-01 01:00:00');
insert into measurements (measurement_value,measurement_time) values (40,TIMESTAMP'2011-01-01 03:00:00');
insert into measurements (measurement_value,measurement_time) values (50,TIMESTAMP'2011-01-01 03:30:00');
insert into measurements (measurement_value,measurement_time) values (40,TIMESTAMP'2011-01-01 05:00:00');
insert into measurements (measurement_value,measurement_time) values (40,TIMESTAMP'2011-01-01 06:00:00');
insert into measurements (measurement_value,measurement_time) values (60,TIMESTAMP'2011-01-01 07:00:00');I'd like to calculate the area of the 'curve' where the value was below a threshold of, e.g. 45.
I can use the trapezium rule and assume a straight line between subsequent measurement, i.e. for the first 2 data points, the value drops from 50 to 40 linearly over the hour, and so the area for those measurements is (30min * 5)/2. For the 2nd and 3rd data points, the area is (120min * 5), for the 3rd and 4th, the area is (15min * 5)/2. And so on. The values are not necessarily round numbers, almost any value is possible.
I've started by using 'lead' to obtain the subsequent measurement value and time, but I'm getting stuck dealing with the end points and non-trivial interpolation. Does anyone have any pointers to get me going?
Thanks,
Dan Scott

Maybe this will do it:
SELECT SUM(CASE
            WHEN curr_value > :threshold AND next_value < :threshold
            THEN -- Area of rectangle specified by threshold
                 (new_measurement_time_sec-curr_measurement_time_sec)*:threshold
               + -- Area of remaining trapezoid
                 ABS((next_measurement_time_sec - new_measurement_time_sec)*((next_value - :threshold)/2))
            WHEN next_value > :threshold AND curr_value < :threshold
            THEN -- Area of rectangle specified by threshold
                 (next_measurement_time_sec-new_measurement_time_sec)*:threshold
               + -- Area of remaining trapezoid
                 (new_measurement_time_sec - curr_measurement_time_sec)*((:threshold - curr_value)/2)
            WHEN (:threshold < curr_value AND :threshold < next_value)
              OR (:threshold > curr_value AND :threshold > next_value)
            THEN (next_measurement_time_sec-curr_measurement_time_sec)*:threshold
            ELSE -- Area of trapezoid
                 ABS((next_measurement_time_sec - curr_measurement_time_sec)*((next_value - curr_value)/2))
       END) AS area
FROM   (
         SELECT measurement_time
              , curr_measurement_time_sec
              , next_measurement_time_sec
              , curr_value
              , next_value
              , (:threshold - LEAD(intercept) OVER (ORDER BY measurement_time))/LEAD(slope) OVER (ORDER BY measurement_time) AS new_measurement_time_sec
         FROM   ( SELECT measurement_time
                       , TO_CHAR(measurement_time,'J')*24*60*60 + TO_CHAR(measurement_time,'SSSSS') AS curr_measurement_time_sec
                       , TO_CHAR(LEAD(measurement_time) OVER (ORDER BY measurement_time),'J')*24*60*60 + TO_CHAR(LEAD(measurement_time) OVER (ORDER BY measurement_time),'SSSSS') AS next_measurement_time_sec
                       , measurement_value                                        AS curr_value
                       , LEAD(measurement_value) OVER (ORDER BY measurement_time) AS next_value
                       , REGR_SLOPE(measurement_value, TO_CHAR(measurement_time,'J')*24*60*60 + TO_CHAR(measurement_time,'SSSSS')) OVER (ORDER BY measurement_time) AS slope
                       , REGR_INTERCEPT(measurement_value, TO_CHAR(measurement_time,'J')*24*60*60 + TO_CHAR(measurement_time,'SSSSS')) OVER (ORDER BY measurement_time) AS intercept
                  FROM   measurements
       )Results:
SQL> var threshold NUMBER;
SQL> exec :threshold := 45;
SQL> /
      AREA
1191437.2The units are the time values were converted to seconds since January 1, 4712 BC (roughly).
Edited by: Centinul on Jul 7, 2011 10:39 AM

Acrobat 5 - Placing PDF into inDesign and Output to Colour Separations are Wrong

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Im facing a similar kind of problem. I want to store and retrieve Office files, PDF and Jpegs into/from the database to view them on web in disconnected mode. Please reply as I cant find any help/documentation regarding saving BLOB data into files. I was able to store file data into BLOB, using DBMS_LOB package.
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Polar plot scale labels and background colour

Dear Labview Forum,
I am trying to create a polar plot. However when I put the polar
plot indicator on my front panel and wire up some data and parameter
control boxes, the scale labels are missing. See polar plot
basic.VI. Are the scale labels there or are they the same colour
(black) as the background and hence not visible?
When you compare this to the polar plot demo, the background is white and the scale labels are present.
How can I control the polar plot background colour parameter?
How can I control the scale label colour and visibility?
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Message Edited by Jamieg on 01-17-2007 02:18 AM
Using Labview version 8.0
Attachments:
polar plot basic.vi ‏31 KB
Polar Plot Demo.vi ‏33 KB
polar plot basic.vi ‏31 KB
Polar Plot Demo.vi ‏33 KB

I'm so sorry ... i am also unable to find the Propety Node... i think i mistook changing the Label/Caption bg colour as changing the whole bg colour... i'm so sorry...
i've tried searching but to no avail... my apologies...
all the best to your application...
Best Regards,
JQ
LV 8.0 user...

Why does my printer print different colours than are displayed on the screen, in Photoshop Elements 10

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Is there a solution to this.
I have checked and I have the latest drivers and the test sheet colours are fine.

I found another thread finally about this issue which effects many. There is a 3rd party that makes drivers that I installed and cut my "sending to printer" time from 10 minutes per page to instantly!
Google: gutenprint or go direct to the Apple page at:
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Thanks in advance for your help.

That was too quick !
Your example is significantly more complicated, since there are some boolean logic behind.
I'm not sure this is something that can be done easily with LabVIEW. After some play with the drawing order of the various curves, I have been able to reproduce your example, but that's not very elegant :
Plots 0 and 1 are duplicates of plots 4 and 5 to improve the drawing (without these additionnal plots, the red and black lines almost disapear, hidden by the inter-curve filling). Line 2 fills to Line 5 (green to red in white). Line 3 fills to Line 4 (black to blue, in grey).
May be someone will comes with a better solution. Ben ?
Message Edité par chilly charly le 10-25-2007 01:45 PM
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Example_BD.png ‏10 KB

Where are the Tone Curve presets in the Lightroom Presets folder?

Hi
I have recenty had to reinstall all my software, and manged to find most of my old Lightroom settings in the Lightroom Presets folder (inside the Appdata folder on a PC) but I seem to have lost my custom tone curves.
Do you know which folder they should be in (indise the Lightroom Presets folder)
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PS: I STILL don't understand why there are TWO comminty forums for Lightroom; it just doesn't make sense to me?!
Edward

Edward Allen wrote:
PS: I STILL don't understand why there are TWO comminty forums for Lightroom; it just doesn't make sense to me?!
You aren't the only one, and neither is going away any time soon.

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Thats good advice.
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Why there are still no curves in Aperture?

Just wondering.

there are parts of the image that are burned out to
255/255/255 but thanks to curves I can make this
"out" point 230/230/230, for example.
This is exactly what the Levels adjustment will do. It doesn't have the numerical feedback that you get from Adobe curves; I have asked for that and think that will get better in v2. For your example above move the Levels trianlgle all the way to the bottom right--sliding it to the left to get your 230RGB to 255RGB adjustment.
A slightly better adjustment IMO might be to have the 3/4 tone top triangle at 95% and the 3/4 tone bottom triangle further to the left. This avoids completely loosing the highligt details while compressing the highlights. Thus freeing up more of the tonal range for brightening the shadows and midtones or increasing contrast in that zone.
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Take a look here to see an example:
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Colour in area underneath a curve on a polar plot

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