function?[h?display_array]?=?displayData（X?example_width）
%DISPLAYDATA?Display?2D?data?in?a?nice?grid
%???[h?display_array]?=?DISPLAYDATA（X?example_width）?displays?2D?data
%???stored?in?X?in?a?nice?grid.?It?returns?the?figure?handle?h?and?the?
%???displayed?array?if?requested.

%?Set?example_width?automatically?if?not?passed?in
if?~exist（‘example_width‘?‘var‘）?||?isempty（example_width）?
	example_width?=?round（sqrt（size（X?2）））;
end

%?Gray?Image
colormap（gray）;

%?Compute?rows?cols
[m?n]?=?size（X）;
example_height?=?（n?/?example_width）;

%?Compute?number?of?items?to?display
display_rows?=?floor（sqrt（m））;
display_cols?=?ceil（m?/?display_rows）;

%?Between?images?padding
pad?=?1;

%?Setup?blank?display
display_array?=?-?ones（pad?+?display_rows?*?（example_height?+?pad）?...
???????????????????????pad?+?display_cols?*?（example_width?+?pad））;

%?Copy?each?example?into?a?patch?on?the?display?array
curr_ex?=?1;
for?j?=?1:display_rows
	for?i?=?1:display_cols
		if?curr_ex?>?m?
			break;?
		end
		%?Copy?the?patch
		
		%?Get?the?max?value?of?the?patch
		max_val?=?max（abs（X（curr_ex?:）））;
		display_array（pad?+?（j?-?1）?*?（example_height?+?pad）?+?（1:example_height）?...
		??????????????pad?+?（i?-?1）?*?（example_width?+?pad）?+?（1:example_width））?=?...
						reshape（X（curr_ex?:）?example_height?example_width）?/?max_val;
		curr_ex?=?curr_ex?+?1;
	end
	if?curr_ex?>?m?
		break;?
	end
end

%?Display?Image
h?=?imagesc（display_array?[-1?1]）;

%?Do?not?show?axis
axis?image?off

drawnow;

end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1502??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\displayData.m

?????文件???????3838??2018-10-21?09:53??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\ex3.m

?????文件????7511764??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\ex3data1.mat

?????文件??????79592??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\ex3weights.mat

?????文件???????3015??2018-10-21?12:04??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\ex3_nn.m

?????文件???????8749??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\fmincg.m

?????文件???????1624??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\AUTHORS.txt

?????文件???????3862??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\ChangeLog.txt

?????文件????????881??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\jsonopt.m

?????文件???????1551??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\LICENSE_BSD.txt

?????文件??????18732??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\loadjson.m

?????文件??????15574??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\loadubjson.m

?????文件????????771??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\mergestruct.m

?????文件??????19369??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\README.txt

?????文件??????17462??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\savejson.m

?????文件??????16123??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\saveubjson.m

?????文件???????1094??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab\varargin2struct.m

?????文件???????1195??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\makeValidFieldName.m

?????文件???????5562??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\submitWithConfiguration.m

?????文件???????2801??2018-10-20?08:15??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lrCostFunction.m

?????文件???????3256??2018-10-20?10:32??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\oneVsAll.m

?????文件???????1324??2018-10-21?11:52??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\predict.m

?????文件???????1764??2018-10-21?11:20??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\predictOneVsAll.m

?????文件????????137??2018-10-19?11:56??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\sigmoid.m

?????文件???????1567??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\submit.m

?????文件?????810219??2018-10-21?12:05??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3.pdf

?????目錄??????????0??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib\jsonlab

?????目錄??????????0??2017-03-13?18:40??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3\lib

?????目錄??????????0??2018-10-21?12:05??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）\ex3

?????目錄??????????0??2018-10-20?09:01??machine-learning-ex3（編程作業(yè)：多元分類與神經(jīng)網(wǎng)絡(luò)）

............此處省略3個文件信息