Demo of JSONlab and output
-
- 1. example/demo_jsonlab_basic.m
-
- 2. output to example/demo_jsonlab_basic.m
-
1. example/demo_jsonlab_basic.m
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Demonstration of Basic Utilities of JSONlab
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
rngstate = rand ('state');
randseed=hex2dec('623F9A9E');
clear data2json json2data
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a simple scalar value \n')
fprintf(1,'%%=================================================\n\n')
data2json=pi
savejson('',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a complex number\n')
fprintf(1,'%%=================================================\n\n')
clear i;
data2json=1+2*i
savejson('',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a complex matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=magic(6);
data2json=data2json(:,1:3)+data2json(:,4:6)*i
savejson('',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% MATLAB special constants\n')
fprintf(1,'%%=================================================\n\n')
data2json=[NaN Inf -Inf]
savejson('specials',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a real sparse matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=sprand(10,10,0.1)
savejson('sparse',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a complex sparse matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=data2json-data2json*i
savejson('complex_sparse',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% an all-zero sparse matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=sparse(2,3);
savejson('all_zero_sparse',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% an empty sparse matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=sparse([]);
savejson('empty_sparse',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% an empty 0-by-0 real matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=[];
savejson('empty_0by0_real',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% an empty 0-by-3 real matrix\n')
fprintf(1,'%%=================================================\n\n')
data2json=zeros(0,3);
savejson('empty_0by3_real',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a sparse real column vector\n')
fprintf(1,'%%=================================================\n\n')
data2json=sparse([0,3,0,1,4]');
savejson('sparse_column_vector',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a sparse complex column vector\n')
fprintf(1,'%%=================================================\n\n')
data2json=data2json-1i*data2json;
savejson('complex_sparse_column_vector',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a sparse real row vector\n')
fprintf(1,'%%=================================================\n\n')
data2json=sparse([0,3,0,1,4]);
savejson('sparse_row_vector',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a sparse complex row vector\n')
fprintf(1,'%%=================================================\n\n')
data2json=data2json-1i*data2json;
savejson('complex_sparse_row_vector',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a structure\n')
fprintf(1,'%%=================================================\n\n')
data2json=struct('name','Think Different','year',1997,'magic',magic(3),...
'misfits',[Inf,NaN],'embedded',struct('left',true,'right',false))
savejson('astruct',data2json,struct('ParseLogical',1))
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a structure array\n')
fprintf(1,'%%=================================================\n\n')
data2json=struct('name','Nexus Prime','rank',9);
data2json(2)=struct('name','Sentinel Prime','rank',9);
data2json(3)=struct('name','Optimus Prime','rank',9);
savejson('Supreme Commander',data2json)
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a cell array\n')
fprintf(1,'%%=================================================\n\n')
data2json=cell(3,1);
data2json{1}=struct('buzz',1.1,'rex',1.2,'bo',1.3,'hamm',2.0,'slink',2.1,'potato',2.2,...
'woody',3.0,'sarge',3.1,'etch',4.0,'lenny',5.0,'squeeze',6.0,'wheezy',7.0);
data2json{2}=struct('Ubuntu',['Kubuntu';'Xubuntu';'Lubuntu']);
data2json{3}=[10.04,10.10,11.04,11.10]
savejson('debian',data2json,struct('FloatFormat','%.2f'))
json2data=loadjson(ans)
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% invalid field-name handling\n')
fprintf(1,'%%=================================================\n\n')
json2data=loadjson('{"ValidName":1, "_InvalidName":2, ":Field:":3, "项ç®":"ç»å¯"}')
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a 2D cell array\n')
fprintf(1,'%%=================================================\n\n')
data2json={{1,{2,3}},{4,5},{6};{7},{8,9},{10}};
savejson('data2json',data2json)
json2data=loadjson(ans) % only savejson works for cell arrays, loadjson has issues
fprintf(1,'\n%%=================================================\n')
fprintf(1,'%% a 2D struct array\n')
fprintf(1,'%%=================================================\n\n')
data2json=repmat(struct('idx',0,'data','structs'),[2,3])
for i=1:6
data2json(i).idx=i;
end
savejson('data2json',data2json)
json2data=loadjson(ans)
rand ('state',rngstate);
2. output to example/demo_jsonlab_basic.m
%=================================================
% a simple scalar value
%=================================================
data2json =
3.1416
ans =
[3.141592654]
json2data =
3.1416
%=================================================
% a complex number
%=================================================
data2json =
1.0000 + 2.0000i
ans =
{
"_ArrayType_": "double",
"_ArraySize_": [1,1],
"_ArrayIsComplex_": 1,
"_ArrayData_": [1,2]
}
json2data =
1.0000 + 2.0000i
%=================================================
% a complex matrix
%=================================================
data2json =
35.0000 +26.0000i 1.0000 +19.0000i 6.0000 +24.0000i
3.0000 +21.0000i 32.0000 +23.0000i 7.0000 +25.0000i
31.0000 +22.0000i 9.0000 +27.0000i 2.0000 +20.0000i
8.0000 +17.0000i 28.0000 +10.0000i 33.0000 +15.0000i
30.0000 +12.0000i 5.0000 +14.0000i 34.0000 +16.0000i
4.0000 +13.0000i 36.0000 +18.0000i 29.0000 +11.0000i
ans =
{
"_ArrayType_": "double",
"_ArraySize_": [6,3],
"_ArrayIsComplex_": 1,
"_ArrayData_": [
[35,26],
[3,21],
[31,22],
[8,17],
[30,12],
[4,13],
[1,19],
[32,23],
[9,27],
[28,10],
[5,14],
[36,18],
[6,24],
[7,25],
[2,20],
[33,15],
[34,16],
[29,11]
]
}
json2data =
35.0000 +26.0000i 1.0000 +19.0000i 6.0000 +24.0000i
3.0000 +21.0000i 32.0000 +23.0000i 7.0000 +25.0000i
31.0000 +22.0000i 9.0000 +27.0000i 2.0000 +20.0000i
8.0000 +17.0000i 28.0000 +10.0000i 33.0000 +15.0000i
30.0000 +12.0000i 5.0000 +14.0000i 34.0000 +16.0000i
4.0000 +13.0000i 36.0000 +18.0000i 29.0000 +11.0000i
%=================================================
% MATLAB special constants
%=================================================
data2json =
NaN Inf -Inf
ans =
{
"specials": ["_NaN_","_Inf_","-_Inf_"]
}
json2data =
specials: [NaN Inf -Inf]
%=================================================
% a real sparse matrix
%=================================================
data2json =
(1,2) 0.6557
(9,2) 0.7577
(3,5) 0.8491
(10,5) 0.7431
(10,8) 0.3922
(7,9) 0.6787
(2,10) 0.0357
(6,10) 0.9340
(10,10) 0.6555
ans =
{
"sparse": {
"_ArrayType_": "double",
"_ArraySize_": [10,10],
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[1,2,0.6557406992],
[9,2,0.7577401306],
[3,5,0.8491293059],
[10,5,0.7431324681],
[10,8,0.3922270195],
[7,9,0.6787351549],
[2,10,0.03571167857],
[6,10,0.9339932478],
[10,10,0.6554778902]
]
}
}
json2data =
sparse: [10x10 double]
%=================================================
% a complex sparse matrix
%=================================================
data2json =
(1,2) 0.6557 - 0.6557i
(9,2) 0.7577 - 0.7577i
(3,5) 0.8491 - 0.8491i
(10,5) 0.7431 - 0.7431i
(10,8) 0.3922 - 0.3922i
(7,9) 0.6787 - 0.6787i
(2,10) 0.0357 - 0.0357i
(6,10) 0.9340 - 0.9340i
(10,10) 0.6555 - 0.6555i
ans =
{
"complex_sparse": {
"_ArrayType_": "double",
"_ArraySize_": [10,10],
"_ArrayIsComplex_": 1,
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[1,2,0.6557406992,-0.6557406992],
[9,2,0.7577401306,-0.7577401306],
[3,5,0.8491293059,-0.8491293059],
[10,5,0.7431324681,-0.7431324681],
[10,8,0.3922270195,-0.3922270195],
[7,9,0.6787351549,-0.6787351549],
[2,10,0.03571167857,-0.03571167857],
[6,10,0.9339932478,-0.9339932478],
[10,10,0.6554778902,-0.6554778902]
]
}
}
json2data =
complex_sparse: [10x10 double]
%=================================================
% an all-zero sparse matrix
%=================================================
ans =
{
"all_zero_sparse": {
"_ArrayType_": "double",
"_ArraySize_": [2,3],
"_ArrayIsSparse_": 1,
"_ArrayData_": null
}
}
json2data =
all_zero_sparse: [2x3 double]
%=================================================
% an empty sparse matrix
%=================================================
ans =
{
"empty_sparse": {
"_ArrayType_": "double",
"_ArraySize_": [0,0],
"_ArrayIsSparse_": 1,
"_ArrayData_": null
}
}
json2data =
empty_sparse: []
%=================================================
% an empty 0-by-0 real matrix
%=================================================
ans =
{
"empty_0by0_real": {
"_ArrayType_": "double",
"_ArraySize_": [0,0],
"_ArrayData_": null
}
}
json2data =
empty_0by0_real: []
%=================================================
% an empty 0-by-3 real matrix
%=================================================
ans =
{
"empty_0by3_real": {
"_ArrayType_": "double",
"_ArraySize_": [0,3],
"_ArrayData_": null
}
}
json2data =
empty_0by3_real: [0x3 double]
%=================================================
% a sparse real column vector
%=================================================
ans =
{
"sparse_column_vector": {
"_ArrayType_": "double",
"_ArraySize_": [5,1],
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[2,3],
[4,1],
[5,4]
]
}
}
json2data =
sparse_column_vector: [5x1 double]
%=================================================
% a sparse complex column vector
%=================================================
ans =
{
"complex_sparse_column_vector": {
"_ArrayType_": "double",
"_ArraySize_": [5,1],
"_ArrayIsComplex_": 1,
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[2,3,-3],
[4,1,-1],
[5,4,-4]
]
}
}
json2data =
complex_sparse_column_vector: [5x1 double]
%=================================================
% a sparse real row vector
%=================================================
ans =
{
"sparse_row_vector": {
"_ArrayType_": "double",
"_ArraySize_": [1,5],
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[2,3],
[4,1],
[5,4]
]
}
}
json2data =
sparse_row_vector: [0 3 0 1 4]
%=================================================
% a sparse complex row vector
%=================================================
ans =
{
"complex_sparse_row_vector": {
"_ArrayType_": "double",
"_ArraySize_": [1,5],
"_ArrayIsComplex_": 1,
"_ArrayIsSparse_": 1,
"_ArrayData_": [
[2,3,-3],
[4,1,-1],
[5,4,-4]
]
}
}
json2data =
complex_sparse_row_vector: [1x5 double]
%=================================================
% a structure
%=================================================
data2json =
name: 'Think Different'
year: 1997
magic: [3x3 double]
misfits: [Inf NaN]
embedded: [1x1 struct]
ans =
{
"astruct": {
"name": "Think Different",
"year": 1997,
"magic": [
[8,1,6],
[3,5,7],
[4,9,2]
],
"misfits": ["_Inf_","_NaN_"],
"embedded": {
"left": true,
"right": false
}
}
}
json2data =
astruct: [1x1 struct]
%=================================================
% a structure array
%=================================================
ans =
{
"Supreme Commander": [
{
"name": "Nexus Prime",
"rank": 9
},
{
"name": "Sentinel Prime",
"rank": 9
},
{
"name": "Optimus Prime",
"rank": 9
}
]
}
json2data =
Supreme_0x20_Commander: {[1x1 struct] [1x1 struct] [1x1 struct]}
%=================================================
% a cell array
%=================================================
data2json =
[1x1 struct]
[1x1 struct]
[1x4 double]
ans =
{
"debian": [
[
{
"buzz": 1.10,
"rex": 1.20,
"bo": 1.30,
"hamm": 2.00,
"slink": 2.10,
"potato": 2.20,
"woody": 3.00,
"sarge": 3.10,
"etch": 4.00,
"lenny": 5.00,
"squeeze": 6.00,
"wheezy": 7.00
},
{
"Ubuntu": [
"Kubuntu",
"Xubuntu",
"Lubuntu"
]
},
[10.04,10.10,11.04,11.10]
]
]
}
json2data =
debian: {{1x3 cell}}
%=================================================
% invalid field-name handling
%=================================================
json2data =
ValidName: 1
x0x5F_InvalidName: 2
x0x3A_Field_0x3A_: 3
x0xE9A1B9__0xE79BAE_: 'ç»å¯'
%=================================================
% a 2D cell array
%=================================================
ans =
{
"data2json": [
[
[
1,
[
2,
3
]
],
7
],
[
[
4,
5
],
[
8,
9
]
],
[
6,
10
]
]
}
json2data =
data2json: {{1x2 cell} [2x2 double] [6 10]}
%=================================================
% a 2D struct array
%=================================================
data2json =
2x3 struct array with fields:
idx
data
ans =
{
"data2json": [
[
{
"idx": 1,
"data": "structs"
},
{
"idx": 2,
"data": "structs"
}
],
[
{
"idx": 3,
"data": "structs"
},
{
"idx": 4,
"data": "structs"
}
],
[
{
"idx": 5,
"data": "structs"
},
{
"idx": 6,
"data": "structs"
}
]
]
}
json2data =
data2json: {{1x2 cell} {1x2 cell} {1x2 cell}}
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