Cannot open structs with variabel viewer
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Hi since a few days I cannot open all of my structs in the variable monitor. If I double click them on the WS the monitor shows up and I get this:
val =
Columns 1 through 7
[1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct]
Columns 8 through 14
[1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct] [1x1 struct]
(it looks exactly like in the Command Window). [edit] the struct is not named val [/edit]
This happens to not all of my structs. Some of them work properly (the way I can click on the 1x1 structs to see the actual data in there).
Does anyone know what to do? To me this is a really big problem, because I need to know the names of the variables inside the struct.
I'm running MLR2025a and Ubuntu 14.04
[Edit2] As I said before the name of the struct is not val. My struct (msgs_odom) contains 25000 sub-structs in these sub-structs there are variables like position, orientation and a time stamp. But I cannot display them with the variable viewer. I cannot click on:
[1x1 struct]
inside the Variable Viewer. [/Edit2]
1 个评论
Jan
2016-3-10
Which struct is not named "val"? The posted text shows, that you display a variable called "val". Do you see the "val ="?
回答（1 个）
per isakson
2016-3-10
编辑：per isakson
2016-3-10
The variable val is a cell array. Each cell contains a struct.
Compare
>> s.a=1;
>> cac = { s, s, s }
cac =
[1x1 struct] [1x1 struct] [1x1 struct]
5 个评论
Hamsterfiedel
2016-3-10
Steven Lord
2016-3-10
Is there a struct array with a field named val, and it is that outer struct you're opening in the Variable Editor?
x = struct;
x.val = {ones(5), rand(6), magic(7)};
x
Or perhaps it's an object? Show us the output of WHOS in the workspace where this behavior occurs and we can figure that out.
per isakson
2016-3-11
编辑：per isakson
2016-3-11
"variable monitor" and "it looks exactly like in the Command Window" confuses me because I don't know what you mean by "variable monitor" and I'm not aware of anything in the Matlab IDE (Matlab Desktop) that displays text like the Command Window does.
"contains 25000 sub-structs"   could it be that you hit an upper limit of the size of structs, which the Variable Editor can handle?
Hamsterfiedel
2016-3-11
I've tested it with smaller structs. It appears that the the Variable Editor could handle all structs with less than 1000 sub-structs.
output of whos:
>> whos
Name Size Bytes Class Attributes
abs_wert_sh 1x44192 353536 double
accessor 1x1 32 function_handle
accessor2 1x1 32 function_handle
accessor3 1x1 32 function_handle
ans 1x659 1318 char
b_pic_ex 1x1 8 double
bag 1x1 372 ros.Bag
bag_file 1x66 132 char
bag_file_name 1x23 46 char
c_mag 1x1 8 double
c_odom 1x1 8 double
c_prtlc 1x1 8 double
fi_ord 1x1 8 double
home 1x32 64 char
i 1x1 8 double
ia 44192x1 353536 double
interp_step_s 1x1 8 double
j 1x1 8 double
kernel 150x1 1200 double
l_interp 1x1 8 double
mag_xyz 3x46430 1114320 double
mag_xyz_fir 3x23120 554880 double
mag_xyz_med 3x23120 554880 double
mag_xyz_raw 3x23120 554880 double
mag_xyz_sh 3x44192 1060608 double
map_pgm 512x576 294912 uint8
map_pgm_name 1x27 54 char
map_yaml_name 1x28 56 char
map_yaml_struct 1x1 1494 struct
max_abs 1x1 8 double
max_mag 1x1 8 double
max_x 1x1 8 double
max_xy 1x1 8 double
max_y 1x1 8 double
meta_mag 1x23120 28715040 cell
meta_odom 1x24597 30205116 cell
meta_prtlc 1x971 1221518 cell
min_mag 1x1 8 double
min_x 1x1 8 double
min_xy 1x1 8 double
min_y 1x1 8 double
msgs_mag 1x23120 42494560 cell
msgs_odom 1x24597 98781552 cell
msgs_prtlc 1x971 137837334 cell
n 1x1 8 double
odom_angl 1x1 590856 struct
odom_ori_raw 4x24597 787104 double
odom_xy 2x46430 742880 double
odom_xy_sh 2x44192 707072 double
odom_xy_sh_v 44192x2 707072 double
odom_xy_v 46430x2 742880 double
odom_xyz 3x46430 1114320 double
odom_xyz_raw 3x24597 590328 double
ori_buffer 4x1 32 double
ori_prtcl_raw 4x971 31072 double
pos_buffer 3x1 24 double
pos_prtcl 3x46430 1114320 double
pos_prtcl_raw 3x971 23304 double
prog 1x26 52 char
prtcl_angl 1x1 23832 struct
raw 1x1 1 logical
raw_twist_definition_mag 1x1149 2298 char
raw_twist_definition_odom 1x384 768 char
step_s 1x1 8 double
t_end 1x1 8 double
t_start 1x1 8 double
times_interp 1x46430 371440 double
times_interp_sh 1x44192 353536 double
times_mag 1x23120 184960 double
times_mag_zero 1x23120 184960 double
times_odom 1x24597 196776 double
times_odom_zero 1x24597 196776 double
times_prtlc 1x971 7768 double
times_prtlc_zero 1x971 7768 double
topic1 1x4 8 char
topic2 1x5 10 char
topic3 1x14 28 char
twist_definition_mag 1x177 354 char
twist_definition_odom 1x620 1240 char
twist_definition_prtcl 1x262 524 char
x_map 1572x1572 19769472 double
y_map 1572x1572 19769472 double
yaw_odom_twist 1x24597 196776 double
I added a picture of what I see when I double click on such a struct in the Workspace
per isakson
2016-3-12
编辑：per isakson
2016-3-12
Now, I understand, but I cannot help. Comments:
- whos shows that msgs_mag is a [1,23120] cell array. Why don't you use a struct array instead? However, that is beside the point.
- each "sub-struct" isn't big,   42494560/23120, ans = 1838.
I made a small experiment on R2013a, 64bit, Win7:
>> s
s =
a: 1
b: 2
c: 3
d: 4
s: [1x1 struct]
>> c = repmat( {s}, [1,231200] );
>> whos c s
Name Size Bytes Class Attributes
c 1x231200 617766400 cell
s 1x1 2560 struct
and displayed c in the Variable Editor
 
It's a bit sluggish (on my eight years old vanilla PC) but it works as expected.
Why not send your problem to tech support? If you have a student license they might not help you, but I think they should be interested.
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