Changing color ramp Intensity Graph

Using LV8
Set property nodes High and Low colors
and interpolate is set to Yes
but the color ramp still stays blue
not sure what I am doing wrong?

Hi,
High and Low Colours are just colours for values which are out of range! For the ramp itself you have to set Scaling.MarkerValues (don't know the correct English term because I'm using a German LV).
That should help it.
Cheers,
Carsten

Similar Messages

Fade colors of intensity graph

Hi everyone,
I've made a program where I read an 2D-array and plot this array in a intensity graph.
I was wondering if the colors in the graph can fade in each other, preferably in vertical position (columns). The idea is that the numeric data becomes visualized like a DNA profile.
I've added a image of the plotted graph.
Thanks.
Solved!
Go to Solution.
Attachments:
Intensity graph plot major.PNG ‏48 KB
Intensity graph plot minor.PNG ‏35 KB

Without manipulating the array, no it's not possible. I made an idea on the Idea exchange to fix this, I recommend you vote for it. Anti-Alias or Smooth Intensity Plot
Like the idea says, see this post for workarounds.
Tim Elsey
LabVIEW 2010, 2012
Certified LabVIEW Architect

How to Change colors in Graphs

Hi Friends,
Please tell me where i can change color options for graph view's.
Thank You
Sunil.

Hi Sunil
Go to graph properties --> Style table --> click on the icon to edit graph data --> Edit conditional formatting for the column.
This the colours can be changed.
Regards,
Akansh Agarwal

Change colors of individual pixels on intensity graph?

I would like to be able to change the color of a set of individual pixels within an intensity graph, to blue for example, while leaving the color table otherwise as is, for example, gray scale. The change to blue would be based on location, not on current gray value. I think I can accomplish this using the mask fx with picture controls, and then convert to intensity graph. Is there a more direct way? A good example to demonstrate this capability would be just using a 'mouse down' event on an intensity graph to change the color at the mouse location. Any thoughts are appreciated.
Sincerely,
Don

Yes, seems to work fine .
If you have LabVIEW 8.0, there is another possibility. There is a new property that allows drawing any pictures or picture elements on your graph area. Of course you could draw individual pixels, but nothing prevents you from e.g. drawing circles, squares, odd shaped areas, arrows or event text. ... Anything you could do with a plain picture indicator. One example that ships with LabVIEW 8.0 is Envelope.vi, see image.
Message Edited by altenbach on 06-12-2006 07:31 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
envelope.png ‏32 KB

Changing color table for intensity graphs

Hi, I've been working on superimposing intensity graphs and I'm almost getting it, I'm just having trouble with color table, it is suppose to be composed of a 1-D array of 256 colors
I have 2 intensity graphs each with a different color table (256 color - 256 locations in the color table array). I need to "squeeze" both color table into a third color table for the superimposing of the 2 intensity graphs. therefore I figure I would take every other color value from each of the first 2 color tables (so each color table shrinks to 128 color) and add the values to form a 3rd color table so that the bottom will correspond to the first color table and the top will correspond to the 2nd color table.
I can do this manually, but it takes WAY too long, so I've been trying to use some kinda of algorism, but I cannot succeed. Anyone have any suggestions? it seems that color table is an unusual kinda of array
My attempted program is attached.
thanks very much!!
Attachments:
superimposing3.vi ‏111 KB

Brian,
I think this is what you're after (attached). The easiest thing to do is to decimate, then concatenate your original color tables to form your new "squeezed" color table. However, keep in mind that you also have to squeeze, or remap, your underlying data values to correspond with either one half of the color table or the other.
See if what I did makes sense.
Regards,
John
Attachments:
superimposing3_MOD.vi ‏90 KB

Color ramp not changing to reflect interactive seting of hi/low color boxes

This is using the colorramp associated with the intensity graph, but it's also true of the basic colorramp in Controls->CLassic->Numeric. The colorboxes change color, but the ramp itself remains the default black-to-blue interpolated scale. (labview 6.1, Windows 2000)

> This is using the colorramp associated with the intensity graph, but
> it's also true of the basic colorramp in Controls->CLassic->Numeric.
> The colorboxes change color, but the ramp itself remains the default
> black-to-blue interpolated scale. (labview 6.1, Windows 2000)
>
The color ramp has a number of colors that control its appearance, up to
about 256 of them. The top and bottom colors are actually the above and
below colors. In otherwords, if your scale goes 0 to 100, the below
color is for intensities below 0 and the above color is used only for
values above 100. Using autoscaling for the Z scale, you will not see
those colors unless you start zooming in by manually changing the Z
scale values. The intermediate colors are set by righ
t clicking on the
markers on the scale. Right click on 100 and there should be a menu
item for Color which will let you change its color. Ditto for 0, and
for any intermediate markers. You can add intermediates by popup or by
dragging another marker onto the scale. You can also drag the
intermediates or type into them to change their location.
Greg McKaskle

Scaling intensity graph Z-ramp with panel - how?

In LV7.1.1 is there any way to get the color ramp associated with an intensity graph to scale with changes in the VI panel size?
I've tried telling VI to scale the intensity graph indicator with the panel and that didn't work nor did telling it to scale all front-panel objects with the panel. The ramp always retains its original size.

I think you are stuck.
As for most of the controls, there is no way to change the size programmatically.
The only thing you could do as work around is to create a picture control (which size can be changed...) to mimick the graph scale...
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...

Setting color table of intensity graph

Hi!
I set the attribute color table of an intensity graph to a rainbow
distribution of the colors, but now I'm not able to change the color
table with the markers in the front panel.
Do you know a solution?
Thanks, Markus

> I set the attribute color table of an intensity graph to a rainbow
> distribution of the colors, but now I'm not able to change the color
> table with the markers in the front panel.
> Do you know a solution?
>
Intensity graphs have two different modes for its color definition.
The first, typical one, is the Color array. It can be set using
either attributes or interactively and lets you define number/color
pairs that create either a smoothly interpolated or a banded color
gradient. The second mode is the color table. This is useful for
bitmaps or for cases where the color table has been custom generated
on the diagram. When using the color table, the Z scale is still
useful for determining which numbers map to the 0-255 range of the
color table. If you set the
Z scale to autoScale, it will find the
min and max of the data and set the Z to show all data mapped through
the color table. If set smaller, some of the values will map to the
first and last out of range colors. If set larger, it will map the
values to a smaller and smaller number of the colors in the color
table.
It sounds like you really want to be using the color array and not
the color table. The intensity graph automatically switches for
you when you write attributes to it, but there is a way to change
it back the the color array using a popup or attribute.
Greg McKaskle

Intensity graph and its "interpolate color" option

Dear Devs,
using LV2013.02f, my intensity graph never redraws correctly (it remains black), after I uncheck and check the "interpolate color" option in the right-click menu for the z-axis. Is this reproducible for anybody, please?
Note: There are more situations when the intensity graph remains black after changing some options, but I could not reproduce them systematically. Any ideas what to use instead of it to display 2D arrays of values?
Cheers,

Dear users,
dear GerdW
Related issue:
Intensity graph displays a black z-axis color bar
The issue(s) are connected to the positions of the markers on the color bar. I converted the VI to a 2010version (again, wrapped in a 7-Zip archive), I hope that helps for now.
Now, when I multiply my 2D array with a suitable high- and at the same time low-enough value (multiplier=1E+34) -- 1E+33 is too low, 1E+35 is already too high; then the markers of the color bar are visible suddenly. The "interpolate color" and the blackness of the graph can be now manipulated and adjusted.
So now, I have to remember that the default markers' positions are (0,50,100) and there is no way to change them before I extend the values of my array over this region suitably. Seriously, I went through all the right-click on the z-axis menu items and executed them one-by-one. None of those brought the z-axis color bar or the colors back into the graph again.
Q: How should a novice know about it? Isn't there a "reset all markers, distribute them equally and show all values in the default spectrum color" button somewhere, and did I missed it?!
Cheers,
Attachments:
2013-11-27 0946 buggy intensity graph.7z ‏133 KB

How can i change the color of the graph in agreement of the program's condition

Hi,
I am using labview 5.1 in my graduation's project final. (sorry by my english, but i am ina hurry)
How can i change the color of the graph in agreement of the program's condition?
I am developing a VI to control the temperature of termistors,but i have another sensor too.
In a graph i have the situation of the termistors,but i want to change the color of the graph when the sensor is active.
Thanks a lot
Rafael Wajnsztajn - Brasil

To change the color of the line itself, you can use the attribute Plot>>Plot Color.
To change the color of the points, you can use the attribute Cursor>>Cursor Color.
To select the color, you should have a color box constant inside the Numeric>>Additional Numeric Constants palette.
This is all in LV 7.0. I'm not sure how it similar it is in 5.1.
One important thing is to place the attribute node inside a case structure which will execute only when your condition has been filled.
If this didn't help you, I suggest you post the relevant piece of code, or at least an image of it (no BMPs, please).
Try to take over the world!

How to change colors in Color Ramps

Hello,
I would like to use Color Ramps, and I need to change colors. In help documents, it say that I juste have to right click in the icon and change what I want. But I tried all option and I can't do anything I want.
Can you help me ??
Thanks
David

Seems that I'm not the only one to have problems with color ramps...
Nearly everything was explained in the on-line help. Nearly...
"Complete the following steps to change the colors of a color ramp.
1. Right-click the color ramp or a marker and select Marker Spacing»Arbitrary from the shortcut menu to switch the color ramp to arbitrary marker spacing.
2. Use the Operating or Positioning tools to right-click the marker next to the color ramp and select Marker Color from the shortcut menu to change the color associated with a marker.
3. Select the color you want from the color picker that appears."
Additionnal hints :
After switching to arbitrary marker spacing, suppress all intermediate markers (right click> Delete). Then adjust the colors of th
e two remaining end markers. With some ramps, you will be obliged to move slighty the marker position to get a color update.
If you need to insert intermediate colors, add intermediate markers (right click > Add). Using the text tool, type in the exact value associated with the marker. Select the color you want to associate with the marker.
When finished, switch back to uniform marker spacing.
Have fun...
CC
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...

BCG Brightness Contrast Gamma - Looking for BCG function returning color table / lookup table coded in pure G and applicable to Intensity Graph or Picture Control

Looking for BCG function returning color table / lookup table coded in
pure G and applicable to 8-bit Intensity Graph or Picture Control. Do
not want to use IMAQ Vision is this particular application. Any
help is appreciated.
Sincerely,
Don

Take a look at this color model software I put together. (Don't concern yourself much with the basic programming at this point.). The color component generator subVI is borrowed from a LabVIEW example.
First look at test_color2.vi. If you adjust the sliders of the various controls, you will see how it works. You can see that for pure B&W images, brightness, contrast, and gamma (which I think I have coded correctly) are all fairly straightforward to modify.
Now look at test_color3.vi. Here we try to adjust BCG for color images using the color model shown here where current color component clusters are carried into the BCG event cases via shift registers. You can see that once color is introduced into the image, it becomes difficult to mix the colorizing with the BCG model. And this is pretty much where I am right now.
Would be interested in comments / suggestions.
Sincerely,
Don
Attachments:
test_color2.llb ‏2251 KB

Changing colors of individual bars in a XY Graph

I am using an XY Graph (bar style) to display 50 voltages. I have limit settings (low alarm,low warning, high warning, high alarm)that I would like to impose on each of the 50 bars in the XY graph. My problem is that any way I try it the limits are only imposed on the first bar on the graph and all the following bars change colors along with the first bar no matter what value they have. Is it possible to control the properties of individual bars inside an XY Graph ??

> I am using an XY Graph (bar style) to display 50 voltages. I have
> limit settings (low alarm,low warning, high warning, high alarm)that I
> would like to impose on each of the 50 bars in the XY graph. My
> problem is that any way I try it the limits are only imposed on the
> first bar on the graph and all the following bars change colors along
> with the first bar no matter what value they have. Is it possible to
> control the properties of individual bars inside an XY Graph ??
>
The short answer is no. All of the elements in a plot use the same
colors to draw. To get the display you want, you need four plots.
Write a subVI that takes in your array and returns the four that you
need. It will index the elements and generates a value in four othe
r
arrays such that three of them are NaN and the fourth contains your
value depending on the alarm status keeping the same X value with all
four plots. As an example, if the value is lower than the low alarm
limit, the value will be placed in the low array and NaNs in the other
three arrays.
Now wire the four arrays to the graph as a multiplot, you will either
use a build array or a Build Clustered array depending on the XY type.
The plots will overlay, with only one point being non-NaN for each X
location. It will use the color for plot 0, 1, 2, or 3 depending on
which array the value was in.
Greg McKaskle

How to change z-value in a specific region in intensity graph

Hi all!
I have an intensity graph and I want to mark a specific region which is dark and then change the z-value(autoscale) so I can see what's in this region, of course the rest of the intensity graph will be very bright but it's not a problem. How do I do that?
Thanks in advance
Giang

Easiest method is to change the z scale, unselect autocscale z and rescale the max and min z to the max and minimum region of interest. This can be easily automated, by using the roi as a subset of the input array and then get max min of the subset and feed it to the z-scale property max min.
Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

How to change z-value in specific region in intensity graph

Hi!
I have an intensity graph and I want to mark a specific region which is dark and then change the z-value(autoscale) so I can see what in this region, of course the rest of the intensity graph will be very bright but it's not a problem. How do I do that?
Thanks in advance
Giang

Assuming you are using LabVIEW, you would be much better off posting to the LabVIEW board since your question has nothing to do with counter/timers.

Changing color ramp Intensity Graph

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