Can't open Documentation on dual screen laptop

Just installed Matlab 2023 on a dual-screen laptop. Can't launch documentation. Similar issues for all the options under RESOURCES tab.

>> doc

Error using strsplit

First input must be either a character vector or a string

scalar.

Error in matlab.net.URI/set.Path (line 432)

obj.Path = strsplit(string(value), '/', 'CollapseDelimiters', false);

Error in matlab.net.URI/parse (line 1202)

obj.Path = parts.Path;

Error in matlab.net.URI (line 874)

obj = obj.parse(dest, literal);

Error in matlab.internal.doc.services.DocSettings/get.Domain (line 39)

helpUrl = matlab.net.URI(matlab.internal.UrlManager().HELP);

Error in matlab.internal.doc.getDocCenterDomain (line 10)

domain = char(docSettings.Domain);

Error in matlab.internal.doc.services.WebDocHandler/getDocRootDomain (line 43)

domain = matlab.net.URI(matlab.internal.doc.getDocCenterDomain);

Error in matlab.internal.doc.services.DocLocationHandler/getDocRootUrl (line 20)

url = obj.getDocRootDomain(options);

Error in matlab.internal.doc.services.DocLocation/getDocRootUrl (line 53)

url = obj.Handler.getDocRootUrl(options);

Error in matlab.internal.doc.url.DocContentPage/getDocRootUrl (line 98)

url = obj.DocLocation.getDocRootUrl("InternalBrowser", internal, "Release", release);

Error in matlab.internal.doc.url.DocContentPage/buildUrl (line 109)

url = getDocRootUrl(obj);

Error in matlab.internal.doc.url.DocPage/getNavigationUrl (line 33)

url = obj.buildUrl;

Error in matlab.internal.doc.ui.DocPageLauncher/openDocPage (line 30)

success = openBrowser(obj.Handler, getNavigationUrl(activePage));

Error in doc (line 79)

launcher.openDocPage;

Answer 1

[Steven Lord]

Let's make sure you don't have a function named split that's taking precedence over the split function included in MATLAB. What does this command show?

which -all split

/MATLAB/toolbox/matlab/strfun/split.m
split is a built-in method                                                   % string method
split is a Java method                                                       % java.lang.String method
/MATLAB/toolbox/matlab/bigdata/@tall/split.m                                 % tall method
/MATLAB/toolbox/matlab/datatypes/calendarDuration/@calendarDuration/split.m  % calendarDuration method
/MATLAB/toolbox/wavelet/wavelet/@dtree/split.m                               % dtree method
/MATLAB/toolbox/wavelet/wavelet/@wdectree/split.m                            % wdectree method
/MATLAB/toolbox/wavelet/wavelet/@wptree/split.m                              % wptree method

If it shows something that's not under the matlabroot directory try renaming that file or removing the directory containing it from the MATLAB path.

[Chun Siong Soon]

Here's what I have. Nothing suspicious.

C:\Program Files\MATLAB\R2023a\toolbox\matlab\strfun\split.m

split is a built-in method % string method

split is a Java method % java.lang.String method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\bigdata\@tall\split.m % tall method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\calendarDuration\@calendarDuration\split.m % calendarDuration method

[Steven Lord]

Can you set an error breakpoint and show us the output of whos when MATLAB stops at that breakpoint?

While we're at it, I don't think it's quite as frequently overloaded as split but could you show the output of which on string as well?

whos

  Name        Size            Bytes  Class    Attributes

  cmdout      1x33               66  char               

which -all string

string is a built-in method                                                                            % string constructor
/MATLAB/toolbox/matlab/strfun/@string/string.m                                                         % Shadowed string constructor
/MATLAB/toolbox/matlab/datatypes/@opaque/string.m                                                      % opaque method
string is a built-in method                                                                            % matlab.indexing.IndexingOperationType method
string is a built-in method                                                                            % matlab.indexing.IndexingContext method
/MATLAB/toolbox/matlab/codetools/@mtree/string.m                                                       % mtree method
/MATLAB/toolbox/matlab/datatypes/categorical/@categorical/string.m                                     % categorical method
/MATLAB/toolbox/matlab/datatypes/datetime/@datetime/datetime.m                                         % datetime method
/MATLAB/toolbox/matlab/datatypes/duration/@duration/duration.m                                         % duration method
string is a built-in method                                                                            % pattern method
string is a built-in method                                                                            % connector.internal.LoggerLevel method
string is a built-in method                                                                            % connector.internal.PromiseState method
string is a built-in method                                                                            % appdesservices.internal.peermodel.BrowserControllerFactory method
string is a built-in method                                                                            % viewmodel.internal.factory.ManagerFactoryProducer method
string is a built-in method                                                                            % matlab.internal.lang.capability.Capability method
string is a built-in method                                                                            % matlab.lang.OnOffSwitchState method
string is a built-in method                                                                            % matlab.graphics.controls.internal.ToolbarValidator method
string is a built-in method                                                                            % message method
string is a built-in method                                                                            % parallel.internal.types.SettingsLevel method
string is a built-in method                                                                            % parallel.internal.types.SchedulerType method
string is a built-in method                                                                            % parallel.internal.types.ValidationStatus method
string is a built-in method                                                                            % parallel.internal.types.ClusterCategory method
string is a built-in method                                                                            % parallel.internal.types.LicenseCategory method
/MATLAB/toolbox/matlab/network/+matlab/+net/+internal/@InetAddress/string.m                            % matlab.net.internal.InetAddress method
/MATLAB/toolbox/matlab/datatypes/missing/missing.m                                                     % missing method
string is a built-in method                                                                            % matlab.internal.doc.services.DocLanguage method
/MATLAB/toolbox/matlab/general/+matlab/+internal/+language/+introspective/stringable.m                 % matlab.internal.doc.reference.ReferenceTopic method
string is a built-in method                                                                            % matlab.internal.reference.property.RefEntityType method
string is a built-in method                                                                            % matlab.internal.doc.reference.ProductPrecision method
string is a built-in method                                                                            % matlab.internal.reference.api.EntityPrecision method
string is a built-in method                                                                            % matlab.internal.reference.property.DeprecationStatus method
string is a built-in method                                                                            % matlab.internal.reference.property.FunctionType method
string is a built-in method                                                                            % matlab.internal.reference.property.SyntaxType method
string is a built-in method                                                                            % matlab.internal.reference.api.EntityCaseSensitivity method
string is a built-in method                                                                            % simulink.FindSystemTask.Status method
string is a built-in method                                                                            % mf.zero.meta.Language method
string is a built-in method                                                                            % dig.config.CommandType method
string is a built-in method                                                                            % dig.config.HorizontalAlignment method
string is a built-in method                                                                            % dig.model.DisplayState method
string is a built-in method                                                                            % dig.model.EventDataType method
string is a built-in method                                                                            % dig.model.FunctionType method
string is a built-in method                                                                            % dig.model.ValidInBdType method
string is a built-in method                                                                            % dig.model.ViewMode method
string is a built-in method                                                                            % dastudio_util.cooperative.AsyncFunctionRepeaterTask.Status method
string is a built-in method                                                                            % coderdictionary.data.AccessFunctionSignaturesEnum method
string is a built-in method                                                                            % coderdictionary.data.AccessInterfaceEnum method
string is a built-in method                                                                            % coderdictionary.data.AccessModeEnum method
string is a built-in method                                                                            % coderdictionary.data.AllowedAccessEnum method
string is a built-in method                                                                            % coderdictionary.data.DataAccessEnum method
string is a built-in method                                                                            % coderdictionary.data.DataAccessTypeEnum method
string is a built-in method                                                                            % coderdictionary.data.DataInitEnum method
string is a built-in method                                                                            % coderdictionary.data.DataInstantiationEnum method
string is a built-in method                                                                            % coderdictionary.data.DataTypeScopeEnum method
string is a built-in method                                                                            % coderdictionary.data.LatchingModeEnum method
string is a built-in method                                                                            % coderdictionary.data.PlacementEnum method
string is a built-in method                                                                            % coderdictionary.data.ScopeEnum method
string is a built-in method                                                                            % coderdictionary.data.StatementsSurroundEnum method
string is a built-in method                                                                            % coderdictionary.data.StatusEnum method
string is a built-in method                                                                            % internal.matlab.inspector.MultiplePropertyCombinationMode method
string is a built-in method                                                                            % internal.matlab.inspector.MultipleValueCombinationMode method
string is a built-in method                                                                            % mtree.Type method
string is a built-in method                                                                            % matlab.unittest.internal.fixtures.FolderScope method
string is a built-in method                                                                            % matlab.automation.Verbosity method
/MATLAB/toolbox/matlab/automation/core/+matlab/+automation/+internal/+diagnostics/FormattableString.m  % matlab.automation.internal.diagnostics.FormattableString method
string is a built-in method                                                                            % matlab.unittest.Scope method
string is a built-in method                                                                            % scoringengine.FailureType method
string is a built-in method                                                                            % matlab.internal.timer.CallBackTypeEnum method
string is a built-in method                                                                            % matlab.internal.timer.ObjectVisibilityEnum method
string is a built-in method                                                                            % matlab.internal.timer.BusyModeEnum method
string is a built-in method                                                                            % matlab.internal.timer.ExecutionModeEnum method
/MATLAB/toolbox/matlab/external/interfaces/webservices/http/+matlab/+net/URI.m                         % matlab.net.URI method
/MATLAB/toolbox/matlab/external/interfaces/webservices/http/+matlab/+net/QueryParameter.m              % matlab.net.QueryParameter method
string is a built-in method                                                                            % matlab.net.ArrayFormat method
/MATLAB/toolbox/matlab/external/interfaces/webservices/http/+matlab/+net/+http/MediaType.m             % matlab.net.http.MediaType method
/MATLAB/toolbox/matlab/external/interfaces/webservices/http/+matlab/+net/+http/HeaderField.m           % matlab.net.http.HeaderField method
/MATLAB/toolbox/matlab/external/interfaces/webservices/http/+matlab/+net/+http/+io/ContentProvider.m   % matlab.net.http.io.ContentProvider method
string is a built-in method                                                                            % matlab.graphics.chart.primitive.utilities.CDataShape method
/MATLAB/toolbox/matlab/bigdata/@tall/string.m                                                          % tall method
/MATLAB/toolbox/nnet/deep/@dlarray/string.m                                                            % dlarray method
/MATLAB/toolbox/parallel/parallel/@codistributed/string.m                                              % codistributed method
/MATLAB/toolbox/symbolic/symbolic/@sym/string.m                                                        % sym method
/MATLAB/toolbox/symbolic/symbolic/@symfun/string.m                                                     % symfun method

Answer 2

[Chun Siong Soon]

There's a lot more, but again it's all from Matlab.

>> which -all string

string is a built-in method % string constructor

C:\Program Files\MATLAB\R2023a\toolbox\matlab\strfun\@string\string.m % Shadowed string constructor

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\@opaque\string.m % opaque method

string is a built-in method % matlab.indexing.IndexingOperationType method

string is a built-in method % matlab.indexing.IndexingContext method

string is a built-in method % pattern method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\codetools\@mtree\string.m % mtree method

C:\Program Files\MATLAB\R2023a\toolbox\nnet\deep\@dlarray\string.m % dlarray method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\datetime\@datetime\datetime.m % datetime method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\duration\@duration\duration.m % duration method

string is a built-in method % connector.internal.LoggerLevel method

string is a built-in method % connector.internal.PromiseState method

string is a built-in method % matlab.internal.lang.capability.Capability method

string is a built-in method % matlab.desktop.editor.RtcEditorState method

string is a built-in method % message method

string is a built-in method % mtree.Type method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\helptools\+matlab\+internal\+doc\+url\DocPage.m % matlab.internal.doc.url.MwDocPage method

string is a built-in method % matlab.internal.doc.services.DocLocation method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\external\interfaces\webservices\http\+matlab\+net\QueryParameter.m % matlab.net.QueryParameter method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\external\interfaces\webservices\http\+matlab\+net\URI.m % matlab.net.URI method

string is a built-in method % matlab.net.ArrayFormat method

string is a built-in method % matlab.internal.doc.url.ContentType method

string is a built-in method % matlab.internal.doc.url.DocPageOriginType method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\missing\missing.m % missing method

string is a built-in method % matlab.internal.doc.services.DocLanguage method

string is a built-in method % FilePathState method

string is a built-in method % matlab.lang.OnOffSwitchState method

string is a built-in method % matlab.graphics.controls.internal.ToolbarValidator method

string is a built-in method % matlab.graphics.shape.internal.util.PointDataTipStyle method

string is a built-in method % matlab.internal.timer.CallBackTypeEnum method

string is a built-in method % matlab.internal.timer.ObjectVisibilityEnum method

string is a built-in method % matlab.internal.timer.BusyModeEnum method

string is a built-in method % matlab.internal.timer.ExecutionModeEnum method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\external\interfaces\webservices\http\+matlab\+net\+http\MediaType.m % matlab.net.http.MediaType method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\external\interfaces\webservices\http\+matlab\+net\+http\HeaderField.m % matlab.net.http.HeaderField method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\general\+matlab\+internal\+language\+introspective\stringable.m % matlab.internal.doc.reference.ReferenceTopic method

string is a built-in method % matlab.internal.reference.property.RefEntityType method

string is a built-in method % matlab.internal.doc.reference.ProductPrecision method

string is a built-in method % matlab.internal.reference.api.EntityPrecision method

string is a built-in method % matlab.internal.reference.property.DeprecationStatus method

string is a built-in method % matlab.internal.reference.property.FunctionType method

string is a built-in method % matlab.internal.reference.property.SyntaxType method

string is a built-in method % matlab.internal.reference.api.EntityCaseSensitivity method

string is a built-in method % matlab.graphics.shape.internal.util.PinnableStyle method

string is a built-in method % matlab.internal.regfwk.ResourceType method

string is a built-in method % matlab.internal.example.docparser.ExampleType method

string is a built-in method % matlab.graphics.chart.primitive.utilities.CDataShape method

string is a built-in method % internal.matlab.inspector.MultiplePropertyCombinationMode method

string is a built-in method % internal.matlab.inspector.MultipleValueCombinationMode method

string is a built-in method % internal.matlab.variableeditor.ObjectTimerState method

string is a built-in method % parallel.internal.pool.PoolApiTag method

string is a built-in method % internal.matlab.datatoolsservices.WorkspaceEventType method

string is a built-in method % matlab.graphics.internal.propertyinspector.views.Shapes method

string is a built-in method % matlab.display.internal.DisplayLayout method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\bigdata\@tall\string.m % tall method

C:\Program Files\MATLAB\R2023a\toolbox\matlab\datatypes\categorical\@categorical\string.m % categorical method

C:\Program Files\MATLAB\R2023a\toolbox\parallel\parallel\@codistributed\string.m % codistributed method

C:\Program Files\MATLAB\R2023a\toolbox\symbolic\symbolic\@sym\string.m % sym method

C:\Program Files\MATLAB\R2023a\toolbox\symbolic\symbolic\@symfun\string.m % symfun method

Warning: First input must be a string array or cell array of character vectors.

> In matlab.internal.mvm.eventmgr.MVMEvent.invokeListener

In matlab.internal.mvm.eventmgr.MVMEvent>@(eventTags,details)matlab.internal.mvm.eventmgr.MVMEvent.invokeListener(listener,eventTags,details)

Answer 3

[Chun Siong Soon]

Breakpoint:

>> doc

432 obj.Path = strsplit(string(value), '/', 'CollapseDelimiters', false);

Warning: First input must be a string array or cell array of character vectors.

> In matlab.internal.mvm.eventmgr.MVMEvent.invokeListener

In matlab.internal.mvm.eventmgr.MVMEvent>@(eventTags,details)matlab.internal.mvm.eventmgr.MVMEvent.invokeListener(listener,eventTags,details)

In matlab.net/URI/set.Path (line 432)

In matlab.net/URI/parse (line 1202)

In matlab.net.URI (line 874)

In matlab.internal.doc.services.DocSettings.get.Domain (line 39)

In matlab.internal.doc.getDocCenterDomain (line 10)

In matlab.internal.doc.services/WebDocHandler/getDocRootDomain (line 43)

In matlab.internal.doc.services/DocLocationHandler/getDocRootUrl (line 20)

In matlab.internal.doc.services/DocLocation/getDocRootUrl (line 53)

In matlab.internal.doc.url/DocContentPage/getDocRootUrl (line 98)

In matlab.internal.doc.url/DocContentPage/buildUrl (line 109)

In matlab.internal.doc.url/DocPage/getNavigationUrl (line 33)

In matlab.internal.doc.ui/DocPageLauncher/openDocPage (line 30)

In doc (line 79)

K>> strsplit(string(value), '/', 'CollapseDelimiters', false)

Error using strsplit

First input must be either a character vector or a string scalar.

K>> value

value =

"/help"

[Chun Siong Soon]

Hi Steven,

Thank you so much for your help! I discovered that there was a toolbox on my path with a strsplit that didn't accept " ".