3D Plot Custom colormap
I am confused at how the custom colormap works. If I select point plot and graph a few points it seems the colors of the points maps one-to-one to the colormap. See the VI and select point as the plot style. The first point is red, next is purple, then blue.
However, if you select surface and do the plot of a surface it seems like it maps the colormap based on Z value? Try by selecting cwSurface as plot style.
What I am ultimately trying to do is plot a HSL colorwheel as one plot and then HSL points as the other plot on the 3D plot. I can generate the points but I am having trouble with the colorwheel.
Also, is there anyway to have the projected point be a different color type than the actual point? Any help would be appreciated.
John
Attachments:
3D Plot tester.vi 2615 KB
Hi John,
Starting with reply #7 of this thread
http://forums.ni.com/ni/board/message?board.id=170&message.id=143663&jump=true
I offer a "worst case" 4-d graph example.
Please read through that thread, down load the example and play with it a bit.
It sounds like your "ColorMapStyle" is not correct for what you are trying to do.
Here is a preview of that example.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Similar Messages
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Cwcustom colormap style on small range when overall range is large
Hi, I am attaching the colormap example that David Mc., and NI Applications Engineer sent me a while back explaining using colorlookup tables. I modified this project to have a data range of 0 to 10001. There is a sin wave located in the range 9999 to 10001 and a single like of 0's to make the range huge of the overall scale. The problem I have is, I set my values of my custom colormap to being 9999, 10000, and 10001 respectively and they don't display in their ranges. If the 0's of the overall range are taken out so that the range only encompasses -1 to 1, this method works fine.
Am I doing something wrong? When a values is assigned to the colorlookup table, the respective value of the data shou
ld be that color correct? Why does this not work on a small range if the overall range is larger. It seems to me that it should.
Thanks,
Kevin
Attachments:
colormap.zip 6 KBHi Kevin,
When using a custom color map, the 3D Graph decimates the data to display as much of the data range it can. It doesn't take the axes ranges into account, it just tries to plot the surface over the entire range.
The large range you are using (0 to 10001 = 10001 point range) pretty much ends up looking like one point at the end of the spectrum. If you switch to a smaller range like 0 to 101 (= 101 point range), you can see how the smaller range can be better displayed by the 3D Graph.
I would suggestion you filter your data, and only plot the points that matter to you (i.e. the ones that fit inside your 3D axis range).
However, the situation you've run into might be a good use case for an enhancement to the 3D Graph: allow you to programmatic
ally control the decimation by setting a "window size". You can visit http://ni.com/contact and click "Product Feedback" to submit a product suggestion for this and any other features you'd like to see.
David Mc.
NI Applications Engineer -
hai,
Can some one plz explain me what is the need of going for Group Bar,Pie, Regression , Coustom Charts in IChart and
im trying to plot Custom chart type with Tag Query values but iam not getting that chart with the TagValues
plz can u tell with which query template we can plot the Custom Chart
Thanks &Regards,
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Pie Chart: It is circular chart and it is divided into sectors.
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http://localhost/LighthammerCMS/Help/Applet_Reference_Details/Applet_Overview.htm
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Different custom colors for a WPF line plot
Dear Sir,
I am trying to create a WPF graph with different colors for different points of time , example Black 0-10,red 11-20, green 21-30...
I saw the nifty video and download the range masking cursor but got stuck.
Thank you
George MAsielloHere's a quick mockup of the custom renderer version (sorry I did not have time to translate it to VB myself):
public class CustomRenderer : PlotRenderer {
private static readonly DataRequirements _dataRequirements = new DataRequirements(
DataCulling.PreserveLines, DataDecimation.CoLinear,
new DataDimension( DataDimensionSource.IndexData, DataDimensionScale.IndependentScale ),
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private readonly Tuple<Color, double>[] _colorRanges = new[] {
Tuple.Create( Colors.Black, 10.0 ),
Tuple.Create( Colors.Red, 20.0 ),
Tuple.Create( Colors.Green, 30.0 ),
private readonly RenderTargetOptions[] _rangeOptions;
public CustomRenderer( ) {
// Create render options for each range color.
_rangeOptions = _colorRanges.Select( colorRange => new RenderTargetOptions( this,
RenderTargetOption.CreateValue( RenderTargetOptionsProperty.Stroke, new SolidColorBrush( colorRange.Item1 ) ),
RenderTargetOption.CreateValue( RenderTargetOptionsProperty.StrokeThickness, 1.0 ) ) )
.ToArray( );
public override SupportedRenderModes SupportedRenderModes {
get { return SupportedRenderModes.VectorAndRaster; }
public override DataRequirements GetDataRequirements( ) {
return _dataRequirements;
protected override Freezable CreateInstanceCore( ) {
return new CustomRenderer( );
protected override void RenderLegendCore( LegendRenderArgs renderArgs ) { }
protected override void RenderGraphCore( PlotRenderArgs renderArgs ) {
// Get the time axis for the renderer.
Plot plot = (Plot)renderArgs.Plot;
var timeAxis = plot.GraphParent.GetAxis( plot, Orientation.Horizontal );
var dataMapper = (IDataMapper<double>)timeAxis.GetDataMapper( plot.GraphParent );
int startIndex = 0;
var xData = renderArgs.RelativeData[0];
var yData = renderArgs.RelativeData[1];
var renderTarget = renderArgs.RenderTarget;
for( int i = 0; i < _colorRanges.Length - 1; ++i ) {
// Draw all data below the current range with the associated color.
int endIndex = startIndex;
double range = _colorRanges[i].Item2;
double offset = dataMapper.Map( range );
while( endIndex < xData.Size && xData[endIndex] <= offset )
++endIndex;
RenderSegment( startIndex, endIndex, xData, yData, renderTarget, _rangeOptions[i] );
startIndex = endIndex;
// Draw all remaining data with the last color range.
RenderSegment( startIndex, xData.Size, xData, yData, renderTarget, _rangeOptions.Last( ) );
private static void RenderSegment( int startIndex, int endIndex, Buffer<double> xData, Buffer<double> yData, IRenderTarget renderTarget, RenderTargetOptions options ) {
int length = endIndex - startIndex;
if( length <= 0 )
return;
// Join current range with previous.
if( startIndex > 0 ) {
--startIndex;
++length;
using( Buffer<double> xSegment = xData.Slice( startIndex, length ) )
using( Buffer<double> ySegment = yData.Slice( startIndex, length ) )
renderTarget.DrawLines( options, xSegment, ySegment );
~ Paul H -
Custom Icon/Marker on XY Plot
Hello,
I have an XY plot in which shows the intended path and current position of a aircraft. I have drawn up a picture of what it somewhat looks like and I attached it to this post. I would like to have a custom icon that will point in the direction the aircraft is flying. I have the heading, so that data is not a problem, though, I am sure there are other problems that I will run in to. I've only looked into this a small bit and have come up with quite a few dead ends. I am now considering going down the ActiveX path, but wanted to get some insight before I dove into that (especially I have not done at ActiveX). That being said, take a look at my picture, which will better explain what I am looking for. I show only 4 time quantities, but there will be many more in the final product since it is a real-time application.
I have seen this page, http://forums.ni.com/ni/board/message?board.id=170&message.id=379432&query.id=4622127#M379432, but considering it is over a year old, I wanted to check and see if anything has changed.
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Message Edited by MegaWatts on 04-12-2010 11:41 AM
-You can never have too much power...
Attachments:
custom_marker.jpg 43 KBUse a picture control.
LV has a shipping example of a XY XChart that is based on the Picture.
THis thread has links to threads with picture related examples.
I used the picture control to render the vectors showing air speed and direction inside a mine gallery. It worked good for me.
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Rayner's Ridge is under construction -
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Attachments:
Untitled 4.vi 41 KB
Untitled1.jpg 319 KBHi murchak,
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National Instruments -
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type?ILOG Elixir has a radar chart that looks like it might be
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If not, check out the plethora of other charting types they
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At a cost of course, but versus development timecost,
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http://www.ilog.com/products/ilogelixir/features/radar-charts/ -
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Attachments:
Sig Gen.xlsx 34 KB -
Waveform Plot Name in Legend Reverts to default even if I change it with a Property node
I have a waveform chart where I am trying to name the plots different titles, so that they appear in the plot legend with a meaningful name, rather than 'Plot 1', 'Plot 2', etc.
However, no matter what I do, if I try to change plot 0's name to anything, the plot name changes for a split second, and then reverts to the name that it originally had. I can succesfully control the names of the other plots, but not plot zero. I have enclosed the VI with the graph control, which I cut and pasted from another VI.
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Wes Ramm, Cyth UK
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Attachments:
Untitled 1.vi 14 KBIgnore attributes help says;
If FALSE (default), the plot names in the plot legend automatically adapt to the plot names in the dynamic or waveform data attributes. If TRUE, the plot names do not adapt to the dynamic or waveform data attributes. Change this property to TRUE if you want to change the plot names. This property applies only to graphs and charts with dynamic or waveform data.
Trying to help,
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Message Edited by Ben on 11-28-2006 07:46 AM
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Attachments:
untitled.JPG 86 KB -
Custom Tag Capitalization Problem..
All,
OS: Windows 2000
App Server: Weblogic 6.0 sp 2
JDK: 1.3 (and tried 1.3.1)
I have a set of custom tags that run fine when I use them on an app server (such as Enhydra) with JDK 1.2.2, but when I switch to JDK 1.3.x, which weblogic 6.x requires, they suddenly start generating errors with attributes which have capitalized letters in them. For example, in my taglib I have:
<attribute>
<name>closeConnection</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
and in the support class I have:
* Get the value of closeConnection.
* @return value of closeConnection.
public boolean getCloseConnection() {
return closeConnection;
* Set the value of closeConnection.
* @param v Value to assign to closeConnection.
public void setCloseConnection(String v) {
if(v.toUpperCase().equals("TRUE")){
this.closeConnection = true;
} else {
this.closeConnection = false;
When I go to the page that this tag is on, I get the following output:
Parsing of JSP File '/index.jsp' failed:
/index.jsp(1): Error in using tag library uri='/cwerks' prefix='cwerks': There is no setter method for property 'closeconnection', for Tag class 'net.cwerks.taglib.MyTag'
probably occurred due to an error in /index.jsp line 1:
<%@ taglib uri="/cwerks" prefix="cwerks" %>
Thu Aug 02 19:06:52 PDT 2001
Note that the 'closeconnection' is all lowercase despite the fact that it is upper case in the tld and in the class itself.
I came across a similar problem in weblogic 5.1 when I upgraded from JDK 1.2.2 to JDK 1.3. I tried changing the JDK for weblogic 6.0 sp 2 to 1.2.2, but a dll was missing. I also tried switching it to 1.3.1, but that did not help. It seems like introspection may have changed slightly between the two version. I'm shocked, and a bit suspicious, that I haven't seen this problem all over the newsgroups. Anyone else seen this?
Thank you,
Carson Gross
[email protected]
[att1.html]
A solution presents itself:
The problem was NOT with capitalization. Instead, the problem was as
follows:
My method was for setting a boolean, but I took a string so that people
wouldn't have to type:
<mytags:tag foo="<%=true%>" />
instead, they could type:
<mytags:tag foo="true" />
which would call the setter method with a string "true", which would be then
converted to a boolean within my class.
So my setter has this signature:
public void setFoo(String s)
and my getter has this signature:
public boolean getFoo() /* I know this isn't standard, but isFoo doesn't
sound good to me*/
I can't tell if it's because JavaBeans changed slightly between jdk 1.2.2
and 1.3.x, or if Weblogic changed the way that they do things (I suspect the
latter, since I had things working fine in WL 5.2 w/ jdk 1.2.2 and then
things broke with WL 5.2 w/ jdk 1.3), but this no longer returns foo as a
valid property to be set, and since weblogic 6.x relies on JavaBeans,
instead of straight up introspection, it barfs. (I found this out by using
jad/emacs, a wicked combination for those who want to poke around in jars).
Anyway, I hope I can save someone else who has this same, albeit
specialized, problem a lot of pain by my discovery. Your getters and
setters better be of the same type with custom tags, or weblogic w/ jdk1.3.x
is gonna barf when parsing the tld.
Cheers, and thank God that's behind me,
Carson Gross
[email protected]
====================================================
"Carson Gross" <[email protected]> wrote in message
news:[email protected]...
The plot grows thicker...
The tags work fine on Tomcat 3.2.2
I deploy the example tags that came with wl60 that have more than one
capital letter in thier attributes, and they work fine. But my tag library
stubbornly insists on not working so long as I keep the attributes with more
than one capital letter in. If I remove the offending attributes, or change
them to have only one capital letter, they work, but this is not an
acceptable solution. (I guess.)
I even created an simple introspection class to make sure that the acutal
methods were there. They were.
I am at a complete loss here... I guess it's tomcat for now.
Cheers,
Carson Gross
[email protected]
"Carson Gross" <[email protected]> wrote in message
news:[email protected]...
All,
OS: Windows 2000
App Server: Weblogic 6.0 sp 2
JDK: 1.3 (and tried 1.3.1)
I have a set of custom tags that run fine when I use them on an app server
(such as Enhydra) with JDK 1.2.2, but when I switch to JDK 1.3.x, which
weblogic 6.x requires, they suddenly start generating errors with attributes
which have capitalized letters in them. For example, in my taglib I have:
<attribute>
<name>closeConnection</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
and in the support class I have:
* Get the value of closeConnection.
* @return value of closeConnection.
public boolean getCloseConnection() {
return closeConnection;
* Set the value of closeConnection.
* @param v Value to assign to closeConnection.
public void setCloseConnection(String v) {
if(v.toUpperCase().equals("TRUE")){
this.closeConnection = true;
} else {
this.closeConnection = false;
When I go to the page that this tag is on, I get the following output:
Parsing of JSP File '/index.jsp' failed:
/index.jsp(1): Error in using tag library uri='/cwerks' prefix='cwerks':
There is no setter method for property 'closeconnection', for Tag class
'net.cwerks.taglib.MyTag'
probably occurred due to an error in /index.jsp line 1:
<%@ taglib uri="/cwerks" prefix="cwerks" %>
Thu Aug 02 19:06:52 PDT 2001
Note that the 'closeconnection' is all lowercase despite the fact that it is
upper case in the tld and in the class itself.
I came across a similar problem in weblogic 5.1 when I upgraded from JDK
1.2.2 to JDK 1.3. I tried changing the JDK for weblogic 6.0 sp 2 to 1.2.2,
but a dll was missing. I also tried switching it to 1.3.1, but that did not
help. It seems like introspection may have changed slightly between the two
version. I'm shocked, and a bit suspicious, that I haven't seen this
problem all over the newsgroups. Anyone else seen this?
Thank you,
Carson Gross
[email protected]
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