I would like to rename the band "B4_stdDev" to "Red_stdDev", and the band "B10_stdDev" to "Temperature_stdDev".
Example code:
var b4_stdDev = ee.Image().rename('B4_stdDev');
var b10_stdDev = ee.Image().rename('B10_stdDev');
var img = ee.Image.cat(b4_stdDev, b10_stdDev);
print(img);
This is a simple example. I actually have an image with approximately 60 bands with names like "B2_mean", "B2_savg", "B2_ent", etc.
For doing this task you need the list of original band names (approximately 60 bands) and a dictionary with your desired changes for producing the list with strings for renaming.
For testing my approach, I first used USGS Landsat 8 Surface Reflectance Tier 1 product with 12 bands; where it was used multiple renaming with 'select' and 'rename' methods (only 4 bands involved). Code snippet looks as follows.
img = img.select(['B1', 'B2', 'B3', 'B4'])
.rename(['ultra blue', 'blue', 'green', 'red']);
print("multiple replace in img", img);
Afterward, I created a list (only 32 elements) for simulating your possible result of application of 'bandNames' method in your image with approximately 60 bands. This list was mapped with a function where substitutions based in distinct values in referred dictionary were produced as expected. Following code snippet summarizes above criteria.
var names_dict = ee.Dictionary({'B1':'ultra blue', 'B2':'blue', 'B3':'green',
'B4':'red', 'B5':'near infrared', 'B6':'shortwave infrared 1', 'B7':'shortwave infrared 2',
'B10':'brightness temperature'
});
var band_names2 = ee.List(["B1_mean", "B1_stdDev", "B1_savg", "B1_ent",
"B2_mean", "B2_stdDev", "B2_savg", "B2_ent",
"B3_mean", "B3_stdDev", "B3_savg", "B3_ent",
"B4_mean", "B4_stdDev", "B4_savg", "B4_ent",
"B5_mean", "B5_stdDev", "B5_savg", "B5_ent",
"B6_mean", "B6_stdDev", "B6_savg", "B6_ent",
"B7_mean", "B7_stdDev", "B7_savg", "B7_ent",
"B10_mean", "B10_stdDev", "B10_savg", "B10_ent"]);
print("band_names2 is simulating application of bandNames in your image with 60 bands");
print("band_names2", band_names2);
print("band_names2 size", band_names2.size());
var forRename = band_names2.map(function (ele) {
return ee.String(ele).replace(ee.String(ele).slice(0, ee.String(ele).index('_')),
names_dict.get(ee.String(ele).slice(0, ee.String(ele).index('_'))));
});
print(forRename);
In your situation, multiple renaming can be produced with following line by using band_names2 and forRename lists.
img = img.select(band_names2).rename(forRename);
Complete code can be find here and result of running it in GEE code editor can be observed in following image.
