# Is.ts function?

**URL:** <https://datashield.discourse.group/t/is-ts-function/320>\
**Category:** Developer support\
**Created:** [7 December 2020 15:48 UTC](https://datashield.discourse.group/t/is-ts-function/320 "2020-12-07T15:48:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![patricia.ryser-welch](https://avatars.discourse-cdn.com/v4/letter/p/a6a055/32.png) [@patricia.ryser-welch](https://datashield.discourse.group/u/patricia.ryser-welch)\
**Post date:** [7 December 2020 15:48 UTC](https://datashield.discourse.group/t/is-ts-function/320/1 "2020-12-07T15:48:31Z")

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Hi all,

Has anybody seen this function before… I am surmise it either a DSI function or server function.

Error in is.ts(x) : argument “x” is missing, with no default

Please, let me know.

P.

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**Author:** ![yannick](https://yyz2.discourse-cdn.com/free1/user_avatar/datashield.discourse.group/yannick/32/19_2.png) [@yannick](https://datashield.discourse.group/u/yannick)\
**Post date:** [7 December 2020 16:07 UTC](https://datashield.discourse.group/t/is-ts-function/320/2 "2020-12-07T16:07:04Z")

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R does not help a lot with error messages… You can still use [rlang](https://rdocumentation.org/packages/rlang) package to debug. If it is not already installed, please install it.

Then, before your code add this:

```auto
options(error = rlang::entrace)

```

Run your code until it fails. Then execute this:

```auto
rlang::last_trace()

```

Then check at the output of the trace, it should tell you where it failed.

Regards  
Yannick

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<div class="post-metadata">

**Author:** ![PatRyserWelch](https://yyz2.discourse-cdn.com/free1/user_avatar/datashield.discourse.group/patryserwelch/32/11_2.png) [@PatRyserWelch](https://datashield.discourse.group/u/PatRyserWelch)\
**Post date:** [24 February 2021 14:11 UTC](https://datashield.discourse.group/t/is-ts-function/320/3 "2021-02-24T14:11:49Z")

</div>

ds.error that catches client and server error has been developed. It can be found here …

> **[patRyserWelch8/dsConnectClient](https://github.com/patRyserWelch8/dsConnectClient)**
>
> R library to provides tools to connect to a DataSHIELD server

P.