indexing must appear last in an index expression

[Erika]

I'm not sure why I get the "indexing must appear last in an index expression" error. I know it is common, but as a new user, I cannot figure out where the curly braces need to be.

Thanks!

clc
%load as vectors
for i = 1:14;
ds = dataset(chrom, pos, x3D7_A10P, x3D7_812, x3D7_712, x3D7_5391, Dd2_TM1, Dd2_TM2, Dd2_PQR);
ds_chr(i)= ds(ds.chrom==(i),:);
meancov_A10P_chr(i) = mean(double(ds_chr(i)(:,3:3)),1);
meancov_812_chr(i) = mean(double(ds_chr(i)(:,4:4)),1);
meancov_712_chr(i) = mean(double(ds_chr(i)(:,5:5)),1);
meancov_5391_chr(i) = mean(double(ds_chr(i)(:,6:6)),1);
meancov_TM1_chr(i) = mean(double(ds_chr(i)(:,7:7)),1);
meancov_TM2_chr(i) = mean(double(ds_chr(i)(:,8:8)),1);
meancov_PQR_chr(i) = mean(double(ds_chr(i)(:,9:9)),1);

norm_A10P_chr(i) = (double(ds_chr(i)(:,3:3)))/meancov_A10P_chr(i);
norm_812_chr(i) = (double(ds_chr(i)(:,4:4)))/meancov_812_chr(i);
norm_712_chr(i) = (double(ds_chr(i)(:,5:5)))/meancov_712_chr(i);
norm_5391_chr(i) = (double(ds_chr(i)(:,6:6)))/meancov_5391_chr(i);
norm_TM1_chr(i) = (double(ds_chr(i)(:,7:7)))/meancov_TM1_chr(i);
norm_TM2_chr(i) = (double(ds_chr(i)(:,8:8)))/meancov_TM2_chr(i);
norm_PQR_chr(i) = (double(ds_chr(i)(:,9:9)))/meancov_PQR_chr(i);

T=table(norm_A10P_chr(i), norm_812_chr(i), norm_712_chr(i), norm_5391_chr(i));
A=table2array(T);
calibrate=nanmean(A,2);
cal_A10P_chr(i)=norm_A10P_chr(i)./calibrate;
cal_812_chr(i)=norm_812_chr(i)./calibrate;
cal_712_chr(i)=norm_712_chr(i)./calibrate;
cal_5391_chr(i)=norm_5391_chr(i)./calibrate;
cal_TM1_chr(i)=norm_TM1_chr(i)./calibrate;
cal_TM2_chr(i)=norm_TM2_chr(i)./calibrate;
cal_PQR_chr(i)=norm_PQR_chr(i)./calibrate;

figure
pos_chr(i)=(double(ds_chr(i)(:,2:2)));
hold on;
h(1) = subplot(7,2,1);
scatter(pos_chr(i), cal_A10P_chr(i), 'filled', 'blue');
scatter(pos_chr(i), cal_812_chr(i), 'filled', 'green');
scatter(pos_chr(i), cal_712_chr(i), 'filled', 'red');
scatter(pos_chr(i), cal_5391_chr(i), 'filled', 'cyan');
scatter(pos_chr(i), cal_TM1_chr(i), 'filled', 'yellow');
scatter(pos_chr(i), cal_TM2_chr(i), 'filled', 'magenta');
scatter(pos_chr(i), cal_PQR_chr(i), 'filled', 'black');

legend('A10P', '812', '712', '5391', 'TM1', 'TM2', 'PQR');
hold off;
end

[dpb]

On 02/16/2015 11:53 PM, Erika wrote:
> I'm not sure why I get the "indexing must appear last in an index
> expression" error. I know it is common, but as a new user, I cannot
> figure out where the curly braces need to be.
>

...

As the error message says, "last"

LHS=cell{idxCell}(idxArrayExpression);

Use the curlies to dereference the cell content then the paren's to
select from that array.

NB: You canNOT use a multiple selection index expression in the cell
index; _ONLY_ a single cell can be accessed at a time

--

[dpb]

On 02/17/2015 8:25 AM, dpb wrote:
> On 02/16/2015 11:53 PM, Erika wrote:
>> I'm not sure why I get the "indexing must appear last in an index
>> expression" error. I know it is common, but as a new user, I cannot
>> figure out where the curly braces need to be.
>>
> ...
>
> As the error message says, "last"
>

> Use the curlies to dereference the cell content then the paren's to
> select from that array.
>
> NB: You canNOT use a multiple selection index expression in the cell
> index; _ONLY_ a single cell can be accessed at a time

ADDENDUM:

In expression

LHS=cell{idxCell}(idxArrayExpression);

"cell" is the cell array name, _NOT_ the ML function CELL().

--