taking input from csv file using texstcan

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Md.Mobasshir Arshed
回答： Walter Roberson 2016-4-17
here the content of test.csv file:
Index,Arrival_Time,Creation_Time,x,y,z,User,Model,Device,gt
0,1424696633908,1424696631913248572,-5.958191,0.6880646,8.135345,a,check4,check4_1,home
1,1424696633909,1424696631918283972,-5.95224,0.6702118,8.136536,a,check4,check4_1,home
2,1424696633918,1424696631923288855,-5.9950867,0.6535491999999999,8.204376,a,check4,check4_1,home
3,1424696633919,1424696631928385290,-5.9427185,0.6761626999999999,8.128204,a,check4,check4_1,home
4,1424696633929,1424696631933420691,-5.991516000000001,0.64164734,8.135345,a,check4,check4_1,home
5,1424696633929,1424696631938456091,-5.965332,0.6297455,8.128204,a,check4,check4_1,home
6,1424696633938,1424696631943522009,-5.991516000000001,0.6356963999999999,8.16272,a,check4,check4_1,home
7,1424696633939,1424696631948496374,-5.915344,0.63093567,8.105591,a,check4,check4_1,home
8,1424696633951,1424696631953592810,-5.984375,0.6940155,8.067505,a,check4,check4_1,home
here is the code for getting the data into matrix:
fid = fopen('test.csv');
[data] = textscan(fid, ['%d %llu %llu %lf %lf %lf %s %s %s %s' '%*[^\n]'], 'delimiter', ',','CollectOutput',true);
fclose(fid);
its producing textscan Badly formed format string. As a newbee i am not able to find any solution. anyone help please??

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回答（2 个）

John BG
John BG 2016-4-2
you have a few longer than 15 digits fields that mislead IMTool.
After adding some Returns, with IMTool i got this;
Try tweaking a few fields:
After removing all the '9' but one on the left, and zeroing the 0000001 IMTool imports data correctly
If you find this answer of any help solving your question, please click on the thumbs-up vote link,
thanks in advance
John
jgb2012@sky.com
  2 个评论
Md.Mobasshir Arshed
Md.Mobasshir Arshed 2016-4-3

hello john..thanks...bt still i cant get the error solved..

after correction test.csv :

Index,Arrival_Time,Creation_Time,x,y,z,User,Model,Device,gt 0,1424696633908,1424696631913248572,-5.958191,0.6880646,8.135345,a,nexus4,nexus4_1,stand 1,1424696633909,1424696631918283972,-5.95224,0.6702118,8.136536,a,nexus4,nexus4_1,stand 2,1424696633918,1424696631923288855,-5.9950867,0.65354919,8.204376,a,nexus4,nexus4_1,stand 3,1424696633919,1424696631928385290,-5.9427185,0.67616269,8.128204,a,nexus4,nexus4_1,stand 4,1424696633929,1424696631933420691,-5.991516,0.64164734,8.135345,a,nexus4,nexus4_1,stand 5,1424696633929,1424696631938456091,-5.965332,0.6297455,8.128204,a,nexus4,nexus4_1,stand 6,1424696633938,1424696631943522009,-5.991516,0.63569639,8.16272,a,nexus4,nexus4_1,stand 7,1424696633939,1424696631948496374,-5.915344,0.63093567,8.105591,a,nexus4,nexus4_1,stand 8,1424696633951,1424696631953592810,-5.984375,0.6940155,8.067505,a,nexus4,nexus4_1,stand

here is the code for getting the data into matrix:

fid = fopen('test.csv'); [data] = textscan(fid, ['%d %llu %llu %lf %lf %lf %s %s %s %s' '%*[^\n]'], 'delimiter', ',','CollectOutput',true,'HeaderLines',1); fclose(fid);

it still shows same error..:(

John BG
John BG 2016-4-17
the following does not crash
[data] = textscan(fid, ['%d %u %u %f %f %f %s %s %s %s %s %s'],'delimiter', ',','CollectOutput',true,'HeaderLines',1);

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Walter Roberson
Walter Roberson 2016-4-17
textscan does not permit the 'l' modifier. It uses numeric suffixes, such as %u32 . See http://www.mathworks.com/help/matlab/ref/textscan.html#inputarg_formatSpec

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