I want to show multiple curves in a single graph of a webpage.
Like I want to show the values where value=4,these values will give a curve then in the same graph i want to draw the values where something's value=6..
How can I do this in Laravel??Can anyone give any tutorial of it or tell me the way??
Thanks in advance.
Related
I am trying to visualize the input I am getting from a joystick on a simple XY Graph in Simulink. I can display the values of the various axes easily using the Scope. However I want to display the X and Y values from the joystick as a dot moving around in real time on a graph or animation or whatever. If there is a better / easier way to do this, maybe with something else then Simulink, then please let me know.
Please check if the XY Graph block serves your purpose. You can see the documentation in the following link :
https://www.mathworks.com/help/simulink/ug/plot-circle-with-xy-graph.html
You can also refer the following if you could log the signals in Simulation Data Inspector:
https://www.mathworks.com/help/simulink/ug/visualize-simulation-data-on-an-xy-plot.html
All the best!
My aim is to calibrate a pair of cameras and use them for simple measurement purposes. For this purpose, I have already calibrated them using HALCON and have all the necessary intrinsic and extrinsic camera Parameters. The next step for me is to basically measure known lengths to verify my calibration accuracies. So far I have been using the method intersect_lines_of_sight to achieve this. This has given me unfavourable results as the lengths are off by a couple of centimeters. Is there any other method which basically triangulates and gives me the 3D coordinates of a Point in HALCON? Or is there any leads as to how this can be done? Any help will be greatly appreciated.
Kindly let me know in case this post Needs to be updated with code samples
In HALCON there is also the operator reconstruct_points_stereo with which you can reconstruct 3D points given the row and column coordinates of a corresponding pixel. For this you will need to generate a StereoModel from your calibration data that is then used in the operator reconstruct_points_stereo.
In you HALCON installation there is an standard HDevelop example that shows the use of this operator. The example is called reconstruct_points_stereo.hdev and can be found in the example browser of HDevelop.
Is there a way to plot data cubes with any kind of program? In order to plot this (1) image, I had to use TinkerCard, that by the way doesn't allow to put names along the data cube dimensions. Is there any kind of tool that allows do do something similar to (2) or (3)? Thanks in advance
I think this is a not possible.
The cubes which I play with all have atleast 10 dimensions.
The problem is that the short name, olap cube, suggests that some sort of pictorial representation is possible.
I think it is maybe better to remeber them using the fuller name multi-dimensional cubes.
Once past 3 dimensions I don't understand how it will be possible to draw a representative picture.
Saying all the above I have a book co-authored by Mosha Pasumadsky which contains some simple cube pictures similar to your picture. Also I attended a course run by Chris Webb and he used pictures of cubes to help our understanding. The pictures they have used are all very simplified, and of only small spaces within a full cube.
I've asked similar questions before and I'm still struggling.
I want to create geo based info graphics at the level of a city.
I need to be able to take some latitude/longitude values and project them such that they are centered and appropriately zoomed.
It would help me a great deal to see an example that plots a small number of points.
37.781040, -122.497681
37.720504, -122.495622
37.723220, -122.395028
This is roughly an L shape and all three points should be in San Francisco.
It could be as simple as 3 black dots on a white background. I hope to learn:
which projection?
how do you adjust the projection so that an area the size of San Francisco is on the canvas?
how do you translate those coordinates and position them on that canvas?
Could someone create such an example?
Thanks.
-Kelly
I created a simple example that works.
https://gist.github.com/kellyfelkins/9741723
I think I was making multiple mistakes that made it really difficult to correct.
In case others have troubles too, here are some things to watch out for:
The projection method expects an array. For a while I was passing it 2 arguments, but it needs a single argument that is an array.
The projection expects the values in longitude, latitude order.
-Kelly
I want to create a UI to do polygon editing. My input is a vector image (cubic bezier). The main goal is users are able to draw scribbles to create new segments on the polygon, so it's like semi-automatic polygon drawing by considering the existing polygon.
Based on assumption the users input is drawn using a mouse, so it's typically rough and quite imprecise.
The new segments aren't only straight lines but also curves, So I think the new segments should also conform the rough input of the users:
Another case:
Is this solvable? Any feedback is really appreciated, I also want to know if there's any paper with similar problem.
Here is way to start with :-
Do connected components on the image to get user scribbles
try and fit the scribbles to line,circle,parabola..
Whichever gives the minimum squared error is the desired curve
Draw the desired curve between the endpoints of scribble.
References:-
Connected components
Curve Fitting
Solved the problem,
I used Euler Spiral
http://www.lems.brown.edu/vision/researchAreas/EulerSpiral/