topic Re: Unable to replicate google map.. in QlikView

Unable to replicate google map..

Tue, 24 Mar 2015 20:07:40 GMT

Steps for beginners to implement Google Maps in Qlikview

Trying to use a map for a chart...I am having problems with both examples. Can't get Google image to show and when I copy and use another file the image shows but cant get coordinates to match? Locations are in US. I see scatter plot of lat and long are relatively correct, but not sure why they are loading negative coordinates as positive?

qvw attached...

Re: Unable to replicate google map..

fred_s — Tue, 24 Mar 2015 22:18:23 GMT

Hi Alex,

There was something wrong with your script.

Replace the Google maps script with the following

Grtz Fred

// Google Maps in QlikView

// V0.9 - October 1st 2008 © Copyright QlikTech International AB 2008 / AES

// Google Maps Key

// get a key here http://code.google.com/apis/maps/signup.html

gmap_key = 'xx';

max_zoom_level = 5; //maximum value 17

// Variables required for calculating map

// No need to change these

var_pi180= '=pi()/180';

var_lat_offset= '0';

var_mc2= '=256*pow(2,$(var_zoom))';

var_mc1= '=256*pow(2,($(var_zoom)-1))';

var_mid_lat= '=min(latitude)+(1+var_lat_offset)*((max(latitude)-min(latitude))/2)';

var_mid_long= '=min(longitude)+(max(longitude)-min(longitude))/2';

var_zoom= '=max(aggr(if(max( round(256*pow(2,(_zoom_level -1)))+( longitude *((256*pow(2,_zoom_level ))/360)) )-min( round(256*pow(2,(_zoom_level -1)))+( longitude *((256*pow(2,_zoom_level ))/360)) ) <map_size_x AND max((256*pow(2,(_zoom_level-1)))+((0.5*log((1+(sin((latitude)*pi()/180)))/(1-(sin((latitude)*pi()/180)))))*((-256*pow(2,_zoom_level))/(2*pi()))))-min((256*pow(2,(_zoom_level-1)))+((0.5*log((1+(sin((latitude)*pi()/180)))/(1-(sin((latitude)*pi()/180)))))*((-256*pow(2,_zoom_level))/(2*pi()))))<map_size_y,_zoom_level,1),_zoom_level))';

var_maptype= '=if(isnull(only(maptype)),fieldvalue( '&chr(39)&'maptype'&chr(39)&', 1 ),maptype)';

map_size_x= '600';

map_size_y= '600';

SET HidePrefix='_' ;

// Field required for calcualting best zoom level

_zoom_level:

Load RecNo( ) as _zoom_level autogenerate(max_zoom_level);

maptype:

LOAD * INLINE [

maptype

roadmap

mobile

satellite

terrain

hybrid

];

Re: Unable to replicate google map..

fred_s — Tue, 24 Mar 2015 22:19:08 GMT

Hi Alex,

There was something wrong with your script.

Replace the Google maps script with the following

Grtz Fred

// Google Maps in QlikView

// V0.9 - October 1st 2008 © Copyright QlikTech International AB 2008 / AES

// Google Maps Key

gmap_key = 'xx';

max_zoom_level = 5; //maximum value 17

// Variables required for calculating map

// No need to change these

var_pi180= '=pi()/180';

var_lat_offset= '0';

var_mc2= '=256*pow(2,$(var_zoom))';

var_mc1= '=256*pow(2,($(var_zoom)-1))';

var_mid_lat= '=min(latitude)+(1+var_lat_offset)*((max(latitude)-min(latitude))/2)';

var_mid_long= '=min(longitude)+(max(longitude)-min(longitude))/2';

var_maptype= '=if(isnull(only(maptype)),fieldvalue( '&chr(39)&'maptype'&chr(39)&', 1 ),maptype)';

map_size_x= '600';

map_size_y= '600';

SET HidePrefix='_' ;

// Field required for calcualting best zoom level

_zoom_level:

Load RecNo( ) as _zoom_level autogenerate(max_zoom_level);

maptype:

LOAD * INLINE [

maptype

roadmap

mobile

satellite

terrain

hybrid

];

Re: Unable to replicate google map..

jpenuliar — Wed, 25 Mar 2015 10:18:32 GMT

Have a look at this tutorial,:

http://community.qlik.com/docs/DOC-5709

Re: Unable to replicate google map..

Wed, 25 Mar 2015 14:40:04 GMT

I figured it out; there was problem with the API image script; the thread below fixed it; hopefully it will work when I load put app into use.

thanks,

corrected version:

='http://maps.googleapis.com/maps/api/staticmap?center=' & num(var_mid_lat, '##############', '.', ',' ) & ',' & num(var_mid_long, '##############', '.', ',' ) & '&zoom=$(var_zoom)' & '&size='&map_size_x&'x'&map_size_y & '&sensor=false' & '&maptype='&var_maptype

Google Map Disappeared!