heatmap

问题 I have a data frame with timestamps and values (a month with values approximately every 5min). Now I want to have plot with the day on the x-axis, the time of day on the y-axis and the value as the color. Best would be if I can control the binning on the y-axis (5min, 10min, 15min.. with the value as the mean for each bin). I am experimenting with ggplot2, but I can't get a reasonable result. p_heat <- ggplot(data = data, aes(x = days(timestamp), y = minutes(timestamp) + hours(timestamp) * 60

问题 I was wondering if it would be possible to animate the heat map I've set up for my Google Map. It was easy enough to set up the google map and add the heat map to it. But it looks quite boring. I wanted to add somekind of a pulse effect to the heat map. Thanks 回答1: It's straightforward to animate the heatmap's appearance. The following example sets a custom array of gradient colors and modulates its size. The result is sort of a pulsing effect. You may tweak the colors to your liking in the

问题 Am getting longitude and latitude values from google's webserivce and passing the values to open weather map api to get the temperature values. Code below function getWeatherData(latitude, longitude) { var temperature = 0; var url = "http://api.openweathermap.org/data/2.5/weather?lat="; url = url + latitude; url = url + "&lon="; url = url + longitude; url = url + "&cnt=1"; $ .ajax({ type : "POST", dataType : "jsonp", url : url + "&callback=?", async : false, success : function(data) {

问题 I'm new to R. i want to generate a heat map using PHP, MongoDB and R. i want to plot geo coordinates(Lat, Lng) on World Map. Below is the sample code i'm trying to use. please let me know how to plot 4 million of lat and lng points on static map. # loading the required packages require(ggplot2) require(ggmap) # creating a sample data.frame with your lat/lon points lon <- c(78.381270, 78.136352, 77.179950) lat <- c(17.440229, 10.104529, 28.680417) df <- as.data.frame(cbind(lon,lat)) # getting

问题 I have data with 3 columns separated by commas in a file 'data.txt' x,y,z 12,12,5.2 12,26,12.1 12,40,3.5 Where x and y are the (x,y) coordinates (range 12-2000) and z is the value/intensity at that point. What is the best way to graph this data? My initial thought was plotting as a 3-D contour plot and view it down the Z-axis, but even that is giving me some issues. I've made due plotting this as an array and plotting using imshow, but I know there's a better way. What advice do you have?

问题 I am in the midst of reimplementing an interactive heatmap from svg to canvas in javascript. I was wondering if anyone had any ideas for how allow someone to select an area and have it zoom into that area using html5 canvas and js. Many thanks, Tom 回答1: Disclaimer : Because you haven't provided any code I am going to stick to Strategy here :) Method 1: DIY First thing you will have to decide is what your resolution or cell size in your case is and what happens to a individual cell when you

问题 Hello I have 2 maps in tabs. One shows a simple map and the other shows the heat map. when the page loads the simple one is shown whereas the heat map is in the hidden div. When I click on the tab which has the heat map it does not display it properly until I resize the browser or the open the browser console. I have tried the resize option but that doesn't works. Can somebody tell me what should I do HTML CODE <ul class="nav nav-tabs nav-tabs-inverse nav-justified nav-justified-mobile" data

问题 I have a simple leaflet heatmap example with data (over 10,000 rows). But it did not produce the gradient heatmap as it should be. The demo is at http://shafiqmustapa.my/test.html heatmap did not produce color according to value what it is look like in arcmap (arcgis) for comparison (dont compare the interpolarity as leaflet does not support it) what could be the problem. Thanks in advance. 回答1: The main reason is that you commented the gradient attribute in your heatLayer parameters. Then

问题 I want to plot my data as a heatmap which has the following structure: X = [1,1,1,1,1,1,1,1,1,1], Y = [1,2,3,4,5,6,7,8,9,10] Z = [0.2, 0.33, 0.1, 0.25, 0.0, 0.9, 0.75, 0.88, 0.44, 0.95] The x and y-axis shall be represented by X and Y, while the 'heat' is represented by the values of Z. E.g. at coordinate (x,y) = (1,2) the intensity shall be 0.33 How can this be achieved by using matplotlib? Looking at posts which relate to the keyword heatmap or even to those related to the term contour map,

问题 Given a set of points (x, y, 'heat'), In [15]: df.head() Out[15]: x y heat 0 0.660055 0.395942 2.368304 1 0.126268 0.187978 6.760261 2 0.174857 0.637188 1.025078 3 0.460085 0.759171 2.635334 4 0.689242 0.173868 4.845778 How to generate a heat map matrix and delimit heat regions (hard)? in such a way that, given a point, it is possible to get all points within the same region. PS: From Generate a heatmap in MatPlotLib using a scatter data set, I know how to generate graphs of regions, but not