README tutorial not working

[Shane B.]

Hello, I am following the Rust tutorial found in the readme. when I run the example, I get an error on this line:

// Load a SPK/BSP file
let spk = SPK::load("../data/de440.bsp").unwrap();

I am receiving the following error:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value:
DecodingData {
     kind: "SPKSummaryRecord", idx: 0, source: InaccessibleBytes {
         start: 0, end: 1024, size: 134 
    }
}'

Anise version: 0.2.1
OS: WSL2 with Ubuntu 22.04.2 LTS distro

if I run on Anise version 0.1.0 I get this error:

thread 'main' panicked at 'range end index 1024 out of range for slice of length 134', /home/shanebenlolo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/anise-0.1.0/src/naif/daf/daf.rs:116:50

thank you for any help you can offer

[Chris]

Hi Shane, This looks like that the DE440s file is shorter than expected because only 134 bytes are present in the file. You may need to run "git lfs pull", which will download a copy of this file from it's large file storage set up. Let me know if that doesn't work. Best regards, Chris

…

On Wed, Jan 17, 2024, 12:34 Shane B. ***@***.***> wrote: Hello, I am following the Rust tutorial found in the readme. when I run the example, I get an error on this line: // Load a SPK/BSP file let spk = SPK::load("../data/de440.bsp").unwrap(); I am receiving the following error: thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: DecodingData { kind: "SPKSummaryRecord", idx: 0, source: InaccessibleBytes { start: 0, end: 1024, size: 134 } }' Anise version: 0.2.1 OS: WSL2 with Ubuntu 22.04.2 LTS distro if I run on Anise version 0.1.0 I get this error: thread 'main' panicked at 'range end index 1024 out of range for slice of length 134', /home/shanebenlolo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/anise-0.1.0/src/naif/daf/daf.rs:116:50 thank you for any help you can offer — Reply to this email directly, view it on GitHub <#178>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABEZV2CPFXDIVGCLZ63ZGNLYPARUFAVCNFSM6AAAAABB7CZMH6VHI2DSMVQWIX3LMV43ASLTON2WKOZSGA4DMOBUG43DSMY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Shane B.]

Hi Chris,

thanks for the quick response. You are correct that the file seems to only contain 134 bytes which I verified by doing:

wc -c de440.bsp
134 de440.bsp

However when I run git lfs pull I only get an error:

git lfs pull
git: 'lfs' is not a git command. See 'git --help'.

Perhaps I am missing some setup steps? The only setup I have done so far is pulled this repo and executed the dev-env-setup shell script found here: https://github.com/nyx-space/anise/blob/master/dev-env-setup.sh

[Chris]

You may also wish to have ANISE automatically download the latest planetary data, constants, ephemerides, and rotations by using the Meta Almanac : https://github.com/nyx-space/anise/blob/master/anise/src/almanac/metaload/mod.rs#L67. That will download the files to your computer's user cache folder, like AppData on Windows.

[Chris]

Oh, I see. You'll need to install the lfs extension to your local git application. On Linux, these packages are usually available under the name "git-lfs", so something like apt-get install git-lfs. On Windows, I'm not sure how to install it, but I know it's possible.

[Shane B.]

That did the trick, I had never head of Git LFS until now. Thank you for the help!