geolocation - getting the location and speed via mobile platforms -

-

is there possibility of getting location of user, moving direction, , speed via mobile platforms(client side programming j2me) ? if there availability in platform please let me know platform , please give me study links study it?

regards, rangana

i'm not sure if there api this, because don't think information (velocity) available.

you can still figure out though, , work on cell phones allow access "current location".

  1. ping phone it's current location every n seconds (10,20,30 seconds, etc...)
  2. log location of phone @ every ping (lat,long)
  3. determine distance traveled ping-to-ping. may need use vector resolution (http://www.physicsclassroom.com/class/vectors/u3l1e.cfm)

for example, if phone moves 1000 meters on course of 30 second ping, means: 1000 meters / 30 seconds = 33.333 m/s

doing this, can determine acceleration, etc... not give instantaneous velocity or acceleration, instead average velocity , average acceleration.


Comments

Post a Comment

Popular posts from this blog

c# - how to write client side events functions for the combobox items -

-
<dx:aspxcombobox id="aspxcombobox2" runat="server" clientidmode="autoid" selectedindex="-1" onselectedindexchanged="aspxcombobox1_selectedindexchanged1" > <clientsideevents selectedindexchanged="function(s, e) { grid.selectrows();}" /> <items> <dx:listedititem text="selecte rows" /> <dx:listedititem text="unselectall" /> </items> </dx:aspxcombobox> i want write event "unselect all" item in combobox. how can this? you'll need write javascript function iterates thru combo-box , marks selected items false. see select/unselect checkbox fields using pure javascript , html sample code msdn:
Read more

exception - Python, pyPdf OCR error: pyPdf.utils.PdfReadError: EOF marker not found -

-
pypdf throws exception: pypdf.utils.pdfreaderror: eof marker not found i don't need fix pypdf, need eof error cause "except" block execute , skip on file, doesn't work. still causes program stop running. background: batch ocr program pdfs python, pypdf, adobe pdf ocr error: unsupported filter /lzwdecode ... saga continues. i got 10,000 pdfs in folder. ocrd, not. can't tell 'em apart. step 1 figure out ones not ocrd , ocr (see other threads details). so i'm using pypdf. exceptions related unrecognized characters , unsupported filters when try read text. guestimated if throws exception, it's got text in , doens't go in list. problem solved, right? so: pypdf import pdffilewriter, pdffilereader import sys, os, pypdf, re path = 'c:\users\homer\documents\my pdfs' filelist = os.listdir(path) has_text_list = [] does_not_have_text_list = [] pdf_name in filelist: pdf_file
Read more