Відео

Thanks for watching!

I am not sure exactly what you mean, but pulling the time stamps from the EXIFs can honestly be really annoying. I was messing around with that in the command line a few months ago and it kept failing. I know there are some exif reader software options, but I remember stopping without pursuing it further at some point. Sorry to not be more helpful

Glad it was helpful!

Hi, I would recommend just using the Landsat NDVI imagery! It will give you the same basic results, if anything it will be better!

What do you mean? Are you thinking of ODM?

Awesome! Yes, it is great that they are so easy to cross and select for anything that is interesting or useful!

Son grandes, casi el tamano de los que estan abiertos. Y no son verdes para nada!

Look me up at UC Davis!

Hi, haha good questions! Runner beans are tricky... they are the only domesticated Phaseolus bean that will not self-pollinate, unless someone does it manually! The flowers of most other beans will self-pollinate in the absence of insects or people. So it will be tricky, sometimes we self-pollinate the runner beans by hand (this must be done in the greenhouse, where there are no insects). But to get seed, something needs to pollinate, and if you have many varieties in an area, the bees will move the pollen around! So I would say there isn't a clear distance that bees couldn't / wouldn't cross. You can self-pollinate if needed, otherwise, the further the better, if you don't want outcrossing!

Hi, I would use the information tool (little "i" symbol) to click around your field at areas of interest to check on that. I also use median soil values, rather than averages, in case you have furrows. But that would be a very strange pattern to have soil higher than canopies, I would check everything very carefully. If the plants are truly tiny, maybe < 3 weeks old, they might be too small to display properly, otherwise I would just thoroughly check everything

Were the images in the correct location? About what was the ratio or factor of shrinking? It could be an issue with reading in the geotags in the wrong coordinate system if it is a major deviation

Hi, Here is a source for the Excess Green Index, if you are interested: Woebbecke, D.M.; Meyer, G.E.; Von Bargen, K.; Mortensen, D.A. Color indices for weed identification under various soil, residue, and lighting conditions. Trans. ASAE 1995, 38, 259-269. I will also shamelessly advocate for our paper where we published this whole workflow, including the use of excess green! Parker, T. A., Palkovic, A., & Gepts, P. (2020). Determining the genetic control of common bean early-growth rate using unmanned aerial vehicles. Remote Sensing, 12(11), 1748.

We do this on thousands of plots regularly, but if the spacing is tight, it can be cumbersome to try to separate exactly, so I usually try to build a little extra spacing into the trials when possible, or just extract from the centers of canopies. If you have links to other helpful tools, let me know!

@@travisparkerplantscience the tools were internal to the company, never publicly released.

@@juanignaciocarrano860 For sure, good deal

Ahh, eu lamento ouvir isso. Para nos, na estufa, e quase 95%. Talvez 90%. Mas no campo, e muito menos, nao e comun ter suceso no campo, faz muito quente. Eu tentaria num lugar sombroso e fresco (nao tao quente), funcionaria melhor

O polinizar manualmente y después proteger con bolsita de tul

Thank you! Plant breeding is wonderful, just about anything you want, you will get! All the best in your breeding adventures :)

Hi Jean Pierre, here is a paper where we did this kind of thing: www.mdpi.com/2072-4292/12/11/1748

Hi, thanks for your comment. Yeah I don't go into a ton of detail about how to deal with complex terrain here, but one thing that helps is to use a grid of smaller polygons. If you are dealing with a deciduous forest where trees lose there leaves, the best thing to do is fly in winter (with ground control points) and then compare to summer when trees are leafy. Negative values mean that your canopy is on average lower than the forest floor or other non-canopy areas. As far as canopy volume vs. forest stand volume, that might be, I think it depends on the resolution of your orthomosaic, maybe among other things

I’m guessing that the same or similar methods apply to Vigna species. I’m interested in crossing some cowpeas, though I’d have to do something about ants which are mad for the nectaries near the flower base!

Hi, this is part of a larger playlist: ua-cam.com/video/obRng3LLkRs/v-deo.html Specifically, this video might be useful: ua-cam.com/video/uklnnLmfN6U/v-deo.html

Hi, yes it should all be the same

Usually by the time you have a mask layer, you are working with your vegetation index data to get the data you need, and aren't going back to the original RGB except maybe to make slides for a presentation or something. For presentation purposes, you can often just put your sDSM (soil digital surface model, see the plant height and canopy volume video in this playlist) on top of your RGB layer in the layer panel at bottom left. If you really need a masked RGB orthomosaic for some reason, you would probably have to use the raster calculator (as explained starting around 0:55 in this video) to calculate (RGBband / mask) for each of the bands, then merge the outputs again as explained in the final video in this video series. I hope that helps!

@@travisparkerplantscience I tried it and it works thank you!!

Thank you! I am glad it was useful for you!

Hi, I usually don't want to cut my raster images up into large numbers of smaller images, usually it is more manageable to just extract data from each cell in the grid but keep a single raster. But here's something to try: 1. Open both the raster and vector files in QGIS. 2. Make sure that the vector file is in the same coordinate reference system (CRS) as the raster file. You can check this by right-clicking on the layer and selecting "Properties" > "General" > "Coordinate Reference System". 3. If the vector file is not in the correct CRS, you can change it by right-clicking on the layer and selecting "Set Layer CRS". 4. Select the raster layer and go to "Raster" > "Extraction" > "Clip Raster by Mask Layer". 5. In the "Clip Raster by Mask Layer" dialog, select the vector layer as the "Mask Layer". 6. If necessary, you can adjust the other settings, such as the output file format and the output extent. 7. Click "Run" to clip the raster file based on the vector grid. 8. The clipped raster layer will be added to the QGIS project, and you can view it in the Layers panel. 9. You can also save the clipped raster as a new file by right-clicking on the layer and selecting "Export" > "Save As". In the "Save Raster Layer As" dialog, choose the output file format and location, and click "Save".