matlab - How to automatically loop over the combinations -


this question has answer here:

new version:

the edited part of main program , function

aid=[30,50,52,53,54,56,57,72,75,77]; sid=[30,50,52,53,54,56,57,72,75,77]; [aid,sid]=meshgrid(aid,sid) myfunction=@(sid,aid)myfunc(blink,sid,aid);                                     [rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4]=arrayfun(blink,aid,sid)

function

function [rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4] = arrayfun(blink,aid,sid) i=1:length(blinksetlist)  s=cell2mat(blinksetlist(i));                                     j=1:length(s)      if s(j).aid==aid & s(j).sid==sid                if s(j).anchorchan==0 & s(j).sourcechan==0                      y=s(j).agc;                                                      rss_db1(i)= -(33+y*(89-33)/(29-1));         else             rss_db1(i)=0;             isempty(rss_db1(i))                       end         if s(j).anchorchan==0 & s(j).sourcechan==1                     y=s(j).agc;                                                      rss_db2(i)= -(33+y*(89-33)/(29-1));         else             rss_db2(i)=0;             isempty(rss_db2(i))         end         if s(j).anchorchan==1 & s(j).sourcechan==0                      y=s(j).agc;                                                      rss_db3(i)= -(33+y*(89-33)/(29-1));         else             rss_db3(i)=0;             isempty(rss_db3(i))         end         if s(j).anchorchan==1 & s(j).sourcechan==1                      y=s(j).agc;                                                     rss_db4(i)= -(33+y*(89-33)/(29-1));         else             rss_db4(i)=0;             isempty(rss_db4(i))         end      end               end end    rss_db1(rss_db1==0)=[];    rss_db2(rss_db2==0)=[];    rss_db3(rss_db3==0)=[];    rss_db4(rss_db4==0)=[];    y1=std(rss_db1);    y2=std(rss_db2);    y3=std(rss_db3);    y4=std(rss_db4);    rss_dbm1=sum(rss_db1(:))/length(rss_db1);    rss_dbm2=sum(rss_db2(:))/length(rss_db2);    rss_dbm3=sum(rss_db3(:))/length(rss_db3);    rss_dbm4=sum(rss_db4(:))/length(rss_db4);      disp([sprintf('the rssi value  a-chan 0 , s-chan 0 %0.0f',rss_dbm1)]);     disp([sprintf('the rssi value  a-chan 0 , s-chan 1 %0.0f',rss_dbm2)]);     disp([sprintf('the rssi value  a-chan 1 , s-chan 0 %0.0f',rss_dbm3)]);     disp([sprintf('the rssi value  a-chan 1 , s-chan 1 %0.0f',rss_dbm4)]);

and output followed error as

aid =    columns 1 through 10   30 50 52........    30 50 52    30 50 52   .   .  sid =    columns 1 through 10    30        30          30                     50        50          50             52        52          52......      .   .   .

??? undefined function or variable "rss_db1". error in ==> arrayfun @ 54 rss_db1(rss_db1==0)=[];

error in ==> main_reduced @ 38

[rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4]=arrayfun(blink,aid,sid)

but want result

result combinations example: aid=30 sid=50 , aid=50 sid=54 , aid= 54 sid=57 .......

the rss value  a-chan 0 , s-chan 0 -68 % combination of aid=30 sid=50  rss value  a-chan 0 , s-chan 1 -73 % pairs of anchor , source channel (0,0),(0,1),(1,0),(1,1) rss value  a-chan 1 , s-chan 0 -73 rss value  a-chan 1 , s-chan 1 -76 rss value  a-chan 0 , s-chan 0 -68 % combination of aid=50 sid=54  rss value  a-chan 0 , s-chan 1 -73% pairs of anchor , source channel (0,0),(0,1),(1,0),(1,1) rss value  a-chan 1 , s-chan 0 -73 rss value  a-chan 1 , s-chan 1 -76 rss value  a-chan 0 , s-chan 0 -68 % combination of aid=54 sid=57  rss value  a-chan 0 , s-chan 1 -73 % pairs of anchor , source channel (0,0),(0,1),(1,0),(1,1) rss value  a-chan 1 , s-chan 0 -73 rss value  a-chan 1 , s-chan 1 -76  rss_dbm1 =-68 rss_dbm2 =-72.8621 rss_dbm3 =-73 rss_dbm4 = -76 rss_dbm1 =-68 rss_dbm2 =-72.8621 rss_dbm3 =-73 rss_dbm4 = -76 rss_dbm1 =-68 rss_dbm2 =-72.8621 rss_dbm3 =-73 rss_dbm4 = -76

note : @ times channel pair combinations or aid & sid combinations not exist, in case returns nan ( that's why used isempty)

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

first of appreciate whoever sees post , try giving solution.thanks in advance

my questions follows,

a part of main program

 aid=30;  sid=50;

[rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4]=sample(blink,aid,sid)

note: aid has different id's 30,50,52,54,55,57 (same sid) sid has different id's 30,50,52,54,55,57 ( same aid)

  here aid , sid manually entered user check below anchorchannel , source channel condition , check if such combination exist display rss values if not return nan.

calling function

 function [rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4]=sample(blink,aid,sid)            i=1:length(blink)     %blink=<500x1 cell> inside several blinks present  s=cell2mat(blink(i));     %  information on aid,sid,agc    j=1:length(s)     if s(j).aid==aid && s(j).sid==sid              if s(j).anchorchannel==0 && s(j).sourcechannel==0 %anchor-source channel                                            y=s(j).agc; %agc present in every blink calculate rss       %combination                                                    rss_db1(i)= -(33+y*(89-33)/(29-1));         else             rss_db1(i)=0;             isempty(rss_db1(i))                       end         if s(j).anchorchannel==0 && s(j).sourcechannel==1                      y=s(j).agc;                                                     rss_db2(i)= -(33+y*(89-33)/(29-1));         else             rss_db2(i)=0;             isempty(rss_db2(i))         end         if s(j).anchorchannel==1 && s(j).sourcechannel==0                     y=s(j).agc;                                                     rss_db3(i)= -(33+y*(89-33)/(29-1));         else             rss_db3(i)=0;             isempty(rss_db3(i))         end         if s(j).anchorchan==1 && s(j).sourcechan==1                      y=s(j).agc;                                                     rss_db4(i)= -(33+y*(89-33)/(29-1));         else             rss_db4(i)=0;             isempty(rss_db4(i))         end     end   end end      rss_db1(rss_db1==0)=[];    rss_db2(rss_db2==0)=[];    rss_db3(rss_db3==0)=[];    rss_db4(rss_db4==0)=[];    y1=std(rss_db1);    y2=std(rss_db2);    y3=std(rss_db3);    y4=std(rss_db4);    rss_dbm1=sum(rss_db1(:))/length(rss_db1);    rss_dbm2=sum(rss_db2(:))/length(rss_db2);    rss_dbm3=sum(rss_db3(:))/length(rss_db3);    rss_dbm4=sum(rss_db4(:))/length(rss_db4);      disp([sprintf('the rss value  a-chan 0 , s-chan 0 %0.0f',rss_dbm1)]);     disp([sprintf('the rss value  a-chan 0 , s-chan 1 %0.0f',rss_dbm2)]);     disp([sprintf('the rss value  a-chan 1 , s-chan 0 %0.0f',rss_dbm3)]);     disp([sprintf('the rss value  a-chan 1 , s-chan 1 %0.0f',rss_dbm4)]);

now problem how automatically check different combinations of aid , sid without giving user input ?. if make sense should loop on every combinations , return "rss" result possible combinations of aid sid anchor channel , source channel

result 1 combination: aid=30 sid=50

the rss value  a-chan 0 , s-chan 0 -68 rss value  a-chan 0 , s-chan 1 -73 rss value  a-chan 1 , s-chan 0 -73 rss value  a-chan 1 , s-chan 1 -76  rss_dbm1 =-68 rss_dbm2 =-72.8621 rss_dbm3 =-73 rss_dbm4 = -76   y1 = 1.4142 y2 =  1.4072 y3 =   0 y4 =  1.1547

the above result 1 aid(30) sid(50) combination.but want loop on aid=50 sid=52, aid=52 sid=55, aid=57 sid=54 these examples of pairs. want result above output, except should include pairs mentioned ,with 4 different channel combinations

note:the output above combination must included below mentioned combinations too. example:aid=50 sid=52,aid=52 sid=55,aid=57 sid=54 anchor,source channel pairs (0,0),(0,1),(1,0),(1,1) in few cases anchor source channel pairs not exist automatically returns '0'or'nan'

suppose have function takes sid , aid arguments , returns single struct data need:

res = function sample(blink, aid, sid)

as said, res here struct fields rss_dbm1, rss_dbm2, etc...

and have 2 arrays:

sids = [30,50,52,54,55,57]; aids = [30,50,52,54,55,57];

to obtain pairs of sids , aids can use meshgrid function:

[sid aid] = meshgrid(sids, aids);

and call function each pair can use arrayfun function:

fn = @(sid, aid) sample(blink, sid, aid); data = arrayfun(fn, sid, aid);

data here length(sids) x length(aids) structure matrix. used here anonymous function (lambda expression) partial application of first argument of sample function.

if don't want change function, can use is:

fn = @(sid, aid) sample(blink, sid, aid); [rss_dbm1,rss_dbm2,rss_dbm3,rss_dbm4,y1,y2,y3,y4] = arrayfun(fn, sid, aid);

in case each returned variable length(sids) x length(aids) array.


Comments

Post a Comment

Popular posts from this blog

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());
Read more