I have gridded soil moisture and soil temperature data over the years in layers. I am trying to create a Rshiny App using leaflet package to make clickable output.
The goal is: if anyone clicks on any point in the map, it should show the linear plot showing the relationship between soil temperature (x-axis) and soil moisture (y-axis) for the grid cell. Is there any shiny app with this type of work? Any help on code will be appreciated.
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I would like to know if the TeeChart can do a scatter and\or kde contour for a series with downsampling of the data. I also need to be able to click on the chart and get the x and y point value.
I have looked at the documentation and the few examples but have not been able to determine if it can do it or how specifically to set it up. I would like to know before I purchase a license.
I'm fairly new to computer vision and currently trying to make the following happen, but had no success so far.
My situation: I want to track different landmarks of a person with mediapipe. Tracking with a single camera works fine and also tracking with two cameras at the same time. What I want is to receive the same coordinate from each camera for a point that has been detected. For example: Camera 1 found the landmark of the left shoulder with the x and y coordinates (1,2). For camera 2 the same landmark has obviously different coordinates lets say (2,3). Ideally there is a way to map or transform the coordinates of camera 2 to camera 1.
the following picture shows the camera setup
Camera setup (I can't post images yet)
So far I've tried to use stereo camera calibration as described here: https://temugeb.github.io/opencv/python/2021/02/02/stereo-camera-calibration-and-triangulation.html. But this doesn't seem to do the trick. I receive a rotation and translation matrix as an output from the calibration, but when I concatenate them to a transformation matrix and multiply it with the coordinates of camera 2, the results don't match with the coordinates of camera 1.
I've also tried to implement planar homography, but since the observed scene isn't limited to a plane, it isn't working well.
The idea behind this is to increase to probability that the landmarks will be detected and use both camera streams to build a full set of coordinates for all desired landmarks.
Is it possible to do what I want to do? If so, what's the name of this process?
I'm really grateful for any help. Thanks in advance.
I would like to redo this plot, which was published in one of the newspaper about Covid 19 death toll. I am not sure what kind of graph is this, I am assuming this is percent stacked area plot.
It is probably a streamgraph of some kind. So, a streamgraph is a type of stacked area chart. It represents the evolution of a numeric variable for several groups. Areas are usually displayed around a central axis, and edges are rounded to give a flowing shape.
I found it hard to install streamgraph from git hub repository, however, there is a ggplot alternative available called "ggTimeSeries". Below is the link for streamgraph R documentation.
https://www.r-graph-gallery.com/streamgraph.html
I am working on a project that requires me to derive equations for some plots that I would get. Here I want to use an accelerometer to get a reading on the points in the Cartesian coordinates and use these to find the equations of the plot for further analysis of the equations.
The reading would be for the vibrations made by an object for which the vibration needs to be damped.
Currently I did not get any method to change a plot from excel to a mathematical equation. The plot points were derived from a smartphone app.
Equations for all three coordinates XYZ can be calibrated separately.
I am in dire need for a vb.net code to change the plot into equation. the charts would be an input to excel.
Any and all help is appreciated.
Thank You
PS. Please explain if posting a code.
VB2010 I am using the DataVisualization.Charting.Chart control and am using it as a very crude map of several geographic points. I have that working and it looks good but am trying to see about adding an image to the chart so that it would simulate the land masses. The problem I see is that I zoom around the chart programmatically, so not sure how i can anchor the image to certain x,y coordinates. I don't want to go the whole GIS component as those types of controls are just too much for this fairly simple app.
Update: Well I sort of resolved it. I generated a full world map based on the WGS84 (some would call geographic) projection. This splits the world into perfect 20d x 20d squares. I added this graphic to the BackImage property of my main Chart. I add my points but force the extents of the graph to x: -180 to 180 and y: -90 to 90. Its crude but its actually spot on for my purposes. The only thing that i cant do is zoom in to my points of interest as the background image is static. I wish there was a way to zoom the background image to anchor parts of the image to coordinates on the graph.