satellite

问题 I'm trying to calculate the DOP values for a set of GPS satellites in Python 2.7.2 using numpy 1.9.3. I found a guide on how to do this but I'm having trouble translating it to python. Here's what I tried so far: import numpy as np # First I defined 3 variables for each satellite as described in the guide. sat_1_1 = np.sin(np.deg2rad(136)) * np.cos(np.deg2rad(14)) sat_1_2 = np.cos(np.deg2rad(136)) * np.cos(np.deg2rad(14)) sat_1_3 = np.sin(np.deg2rad(14)) sat_2_1 = np.sin(np.deg2rad(329)) * np

问题 I am setting the Map to Satellite view on click of a toggle button mapToggle.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (mapToggle.isChecked()) { mapV.setSatellite(true); } else { mapV.setSatellite(false); } }}); I want to programitically determine which mode it is in when the app restarts. Please advice. 回答1: The way I accomplished this is to set an int value in your SharedPreferences. Then onClick of that button, get the value and switch satellite on or off

问题 I'm trying to write a basic python scrip that will track a given satellite, defined with tle's, from a given location. I'm not a asto/orbital person but am trying to become smarter on it. I am running into a problem where the different models I'm using are giving me very different position answers. I have tried using: pyEphem spg4 predict (exec system call from script) The satellites I'm testing with are the ISS and directv10 (one fixed, one moving- with internet tracking available for

问题 I'm very interested in the Leaflet Map API. However, I need to be able to use the Google Satellite Layer. I have not been able to find an example on how to add a Google Satellite Layer to Leaflet. I understand that I will still need to load the Google Maps API to do this (OpenLayers has an example). 回答1: Leaflet has an official page for publishing all available plugins: http://leafletjs.com/plugins.html You will find plugins there for adding Google layers support to Leaflet. 回答2: You don't

问题 I want to include a MapView in my Application. I have been playing around with the Google Api a bit and it worked quite well. But now I want to have a map completely offline. I know there are a lot of possibilities to do this. The problem is that I would like to have a world map without any labels such as country names, state names, city names and so on. I just want a map with country borders. It should be possible to zoom in and out and to set markers at specific locations. It should also be

问题 The input: lst=[ ' 22774080.570 7 1762178.392 7 1346501.808 8 22774088.434 8\n', ' 20194290.688 8 -2867460.044 8 -2213132.457 9 20194298.629 9\n'] The desired output: ['22774080.570 7','none','1762178.392 7','1346501.808 8','22774088.434 8'], ['20194290.688 8','none','-2867460.044 8', .... ] 回答1: I've made a few assumptions here, and this is probably not the most elegant solution, but given that your matching None based on the length of space, this will work [[(None if a.strip() == 'None'

问题 Here's the scenario. I need to prioritize getting GPS from satellite. However if indoor, there will be no new locations received. What I did was if there's no new location received after 2 minutes, then I will switch to network GPS. However, what if the user went outside, the app wouldn't know because it's already listening from network GPS, it will not receive locations from satellite anymore. so it would be better if I could listen to new location updates, weather be from satellite or from

问题 I have a google map with javascript and i want after zoom in 100%,(full zoom) change the mode map from map view to satellite view, how done it in following javascript code? DEMO: http://jsfiddle.net/keL4L2h0/ //////// Loading Google Map ////////////////////////////////////////////////////////////////////////////////// $(function() { var latitude = $('input[name="latitude"]').val(); var longitude = $('input[name="longitude"]').val(); var lat = (latitude ? latitude : 38.341656192795924), lng =

问题 I am trying to draw the maximum (theoretical) field of view of a satellite along its orbit. I am using Basemap, on which I want to plot different positions along the orbit (with scatter), and I would like to add the whole field of view using the tissot method (or equivalent). The code below works fine until the latitude reaches about 75 degrees North, on a 300km altitude orbit. Beyond which the code outputs a ValueError: "ValueError: undefined inverse geodesic (may be an antipodal point)"

问题 Can we display geographical borders of country in satellite view of Google Maps V3, similarly the way border is displayed in Google Earth in satellite view? Thanks! 回答1: I believe something like this should give you borders in satellite view. var custom-Style = [ { featureType: "administrative.country", elementType: "all", stylers: [{ visibility: "on"}] }, { featureType: "administrative.land_parcel", elementType: "all", stylers: [{ visibility: "on"}] } ]; var myOptions = {mapTypeId: google