Rescale not set but being used anyway?

[MattReimer]

I have a categorical Int16 - Sixteen bit signed integer cloud-optimized geotiff. The goal is to assign categories to pixel values and render this to a tile.

I also have a GDAL color ramp that I'm transforming into a rio_tiler colormap for titiler.

# QGIS Generated Color Map Export File
INTERPOLATION:EXACT
7008,180,255,148,255,Open tree canopy
7009,180,255,148,255,Open tree canopy
7010,180,255,148,255,Open tree canopy
7011,180,255,148,255,Open tree canopy
7012,180,255,148,255,Open tree canopy
7013,180,255,148,255,Open tree canopy
7014,180,255,148,255,Open tree canopy
7015,180,255,148,255,Open tree canopy
7016,180,255,148,255,Open tree canopy
7017,180,255,148,255,Open tree canopy

... I removed 700+ lines here ...

9827,130,101,72,255,Shrubland
9828,255,226,130,255,Herbaceous - grassland
9829,255,226,130,255,Herbaceous - grassland
9993,255,226,130,255,Herbaceous - grassland
9994,255,226,130,255,Herbaceous - grassland

It's "kind of" working but I'm getting some strange transparent holes in my data

Here's the tile I expect (This was created through GDAL2Tiles)	Here's what I'm getting through Titiler's cog endpoint

The endpoint I'm using is /cog/tiles/WebMercatorQuad/{z}/{x}/{y}.png

and the query params I'm passing in are like so:

{
  "url": "s3://REDACTED/PATH/TO/COG.tiff",
  "bidx": 1,
  "resampling": "nearest",
  "colormap": "{\"0\": [0, 0, 0, 0], \"7008\": [180, 255, 148, 255], \"7009\": [180, 255, 148, 255], \"7010\": [180, 255, 148, 255], \"7011\": [180, 255, 148, 255], \"7012\": [180, 255, 148, 255], \"7013\": [180, 255, 148, 255], \"7014\": [180, 255, 148, 255], \"7015\": [180, 255, 148, 255], \"7016\": [180, 255, 148, 255], \"7017\": [180, 255, 148, 255], \"7018\": [0, 51, 0, 255], \"7019\": [180, 255, 148, 255], \"7020\": [180, 255, 148, 255], \"7021\": [180, 255, 148, 255], \"7022\": [180, 255, 148, 255], \"7023\": [180, 255, 148, 255], \"7024\": [180, 255, 148, 255], \"7025\": [180, 255, 148, 255], \"7026\": [180, 255, 148, 255], \"7027\": [180, 255, 148, 255], \"7028\": [0, 51, 0, 255], \"7029\": [180, 255, 148, 255], \"7030\": [180, 255, 148, 255], \"7031\": [180, 255, 148, 255], \"7032\": [180, 255, 148, 255], \"7033\": [180, 255, 148, 255], \"7034\": [180, 255, 148, 255], \"7035\": [0, 51, 0, 255], \"7036\": [0, 51, 0, 255], \"7037\": [0, 51, 0, 255], \"7038\": [180, 255, 148, 255], \"7039\": [0, 51, 0, 255], \"7041\": [0, 51, 0, 255], \"7042\": [0, 51, 0, 255], \"7043\": [0, 51, 0, 255], \"7044\": [180, 255, 148, 255], \"7045\": [0, 51, 0, 255], \"7046\": [180, 255, 148, 255], \"7047\": [0, 51, 0, 255], \"7048\": [180, 255, 148, 255], \"7049\": [180, 255, 148, 255], \"7050\": [0, 51, 0, 255], \"7051\": [0, 51, 0, 255], \"7052\": [0, 51, 0, 255], \"7053\": [180, 255, 148, 255], \"7054\": [180, 255, 148, 255], \"7055\": [0, 51, 0, 255], \"7056\": [0, 51, 0, 255], \"7057\": [180, 255, 148, 255], \"7058\": [0, 51, 0, 255], \"7059\": [180, 255, 148, 255], \"7060\": [180, 255, 148, 255], \"7061\": [180, 255, 148, 255], \"7062\": [180, 255, 148, 255], \"7063\": [0, 51, 0, 255], \"7064\": [199, 176, 129, 255], \"7065\": [199, 176, 129, 255], \"7066\": [199, 176, 129, 255], \"7067\": [199, 176, 129, 255], \"7068\": [199, 176, 129, 255], \"7069\": [199, 176, 129, 255], \"7070\": [199, 176, 129, 255], \"7071\": [199, 176, 129, 255], \"7072\": [199, 176, 129, 255], \"7073\": [130, 101, 72, 255], \"7074\": [130, 101, 72, 255], \"7075\": [130, 101, 72, 255], \"7076\": [130, 101, 72, 255], \"7077\": [130, 101, 72, 255], \"7078\": [130, 101, 72, 255], \"7079\": [130, 101, 72, 255], \"7080\": [130, 101, 72, 255], \"7081\": [130, 101, 72, 255], \"7082\": [130, 101, 72, 255], \"7083\": [130, 101, 72, 255], \"7084\": [130, 101, 72, 255], \"7085\": [130, 101, 72, 255], \"7086\": [130, 101, 72, 255], \"7087\": [130, 101, 72, 255], \"7088\": [130, 101, 72, 255], \"7090\": [130, 101, 72, 255], \"7091\": [130, 101, 72, 255], \"7092\": [130, 101, 72, 255], \"7093\": [130, 101, 72, 255], \"7094\": [130, 101, 72, 255], \"7096\": [130, 101, 72, 255], \"7097\": [130, 101, 72, 255], \"7098\": [130, 101, 72, 255], \"7099\": [130, 101, 72, 255], \"7100\": [130, 101, 72, 255], \"7101\": [130, 101, 72, 255], \"7102\": [130, 101, 72, 255], \"7103\": [130, 101, 72, 255], \"7104\": [130, 101, 72, 255], \"7105\": [130, 101, 72, 255], \"7106\": [130, 101, 72, 255], \"7107\": [130, 101, 72, 255], \"7108\": [130, 101, 72, 255], \"7109\": [130, 101, 72, 255], \"7110\": [130, 101, 72, 255], \"7111\": [130, 101, 72, 255], \"7112\": [55, 146, 173, 255], \"7113\": [55, 146, 173, 255], \"7114\": [55, 146, 173, 255], \"7115\": [55, 146, 173, 255], \"7116\": [55, 146, 173, 255], \"7117\": [55, 146, 173, 255], \"7118\": [55, 146, 173, 255], \"7119\": [55, 146, 173, 255], \"7120\": [55, 146, 173, 255], \"7121\": [199, 176, 129, 255], \"7122\": [199, 176, 129, 255], \"7123\": [199, 176, 129, 255], \"7124\": [199, 176, 129, 255], \"7125\": [199, 176, 129, 255], \"7126\": [199, 176, 129, 255], \"7127\": [199, 176, 129, 255], \"7128\": [199, 176, 129, 255], \"7129\": [255, 226, 130, 255], \"7130\": [255, 226, 130, 255], \"7131\": [255, 226, 130, 255], \"7132\": [255, 226, 130, 255], \"7133\": [255, 226, 130, 255], \"7134\": [255, 226, 130, 255], \"7135\": [255, 226, 130, 255], \"7136\": [255, 226, 130, 255], \"7137\": [255, 226, 130, 255], \"7138\": [255, 226, 130, 255], \"7139\": [255, 226, 130, 255], \"7140\": [255, 226, 130, 255], \"7141\": [255, 226, 130, 255], \"7142\": [255, 226, 130, 255], \"7143\": [255, 226, 130, 255], \"7144\": [255, 226, 130, 255], \"7145\": [255, 226, 130, 255], \"7146\": [255, 226, 130, 255], \"7147\": [255, 226, 130, 255], \"7148\": [255, 226, 130, 255], \"7149\": [255, 226, 130, 255], \"7150\": [255, 226, 130, 255], \"7151\": [180, 255, 148, 255], \"7152\": [180, 255, 148, 255], \"7153\": [130, 101, 72, 255], \"7156\": [180, 255, 148, 255], \"7157\": [180, 255, 148, 255], \"7158\": [180, 255, 148, 255], \"7159\": [180, 255, 148, 255], \"7161\": [0, 51, 0, 255], \"7165\": [55, 146, 173, 255], \"7166\": [0, 51, 0, 255], \"7167\": [0, 51, 0, 255], \"7168\": [130, 101, 72, 255], \"7169\": [130, 101, 72, 255], \"7170\": [55, 146, 173, 255], \"7171\": [255, 226, 130, 255], \"7172\": [180, 255, 148, 255], \"7173\": [180, 255, 148, 255], \"7174\": [0, 51, 0, 255], \"7177\": [0, 51, 0, 255], \"7178\": [0, 51, 0, 255], \"7179\": [180, 255, 148, 255], \"7191\": [255, 226, 130, 255], \"7192\": [130, 101, 72, 255], \"7193\": [180, 255, 148, 255], \"7195\": [255, 226, 130, 255], \"7196\": [130, 101, 72, 255], \"7197\": [180, 255, 148, 255], \"7198\": [255, 226, 130, 255], \"7199\": [130, 101, 72, 255], \"7200\": [180, 255, 148, 255], \"7207\": [255, 226, 130, 255], \"7234\": [180, 255, 148, 255], \"7238\": [0, 51, 0, 255], \"7239\": [0, 51, 0, 255], \"7240\": [0, 51, 0, 255], \"7241\": [0, 51, 0, 255], \"7242\": [55, 146, 173, 255], \"7243\": [55, 146, 173, 255], \"7247\": [255, 226, 130, 255], \"7248\": [255, 226, 130, 255], \"7249\": [130, 101, 72, 255], \"7250\": [180, 255, 148, 255], \"7256\": [199, 176, 129, 255], \"7260\": [180, 255, 148, 255], \"7261\": [180, 255, 148, 255], \"7262\": [180, 255, 148, 255], \"7263\": [180, 255, 148, 255], \"7264\": [55, 146, 173, 255], \"7265\": [55, 146, 173, 255], \"7268\": [180, 255, 148, 255], \"7270\": [55, 146, 173, 255], \"7272\": [180, 255, 148, 255], \"7286\": [180, 255, 148, 255], \"7290\": [55, 146, 173, 255], \"7291\": [55, 146, 173, 255], \"7292\": [0, 0, 255, 255], \"7295\": [0, 0, 255, 255], \"7296\": [255, 122, 143, 255], \"7297\": [255, 122, 143, 255], \"7298\": [255, 122, 143, 255], \"7299\": [255, 122, 143, 255], \"7301\": [0, 51, 0, 255], \"7302\": [0, 51, 0, 255], \"7303\": [0, 51, 0, 255], \"7304\": [0, 51, 0, 255], \"7305\": [0, 51, 0, 255], \"7306\": [0, 51, 0, 255], \"7307\": [0, 51, 0, 255], \"7308\": [180, 255, 148, 255], \"7309\": [0, 51, 0, 255], \"7310\": [0, 51, 0, 255], \"7311\": [180, 255, 148, 255], \"7312\": [0, 51, 0, 255], \"7313\": [0, 51, 0, 255], \"7314\": [0, 51, 0, 255], \"7315\": [0, 51, 0, 255], \"7316\": [0, 51, 0, 255], \"7317\": [0, 51, 0, 255], \"7318\": [0, 51, 0, 255], \"7320\": [0, 51, 0, 255], \"7321\": [0, 51, 0, 255], \"7322\": [0, 51, 0, 255], \"7323\": [0, 51, 0, 255], \"7324\": [0, 51, 0, 255], \"7325\": [0, 51, 0, 255], \"7326\": [0, 51, 0, 255], \"7327\": [0, 51, 0, 255], \"7328\": [0, 51, 0, 255], \"7329\": [0, 51, 0, 255], \"7330\": [0, 51, 0, 255], \"7331\": [180, 255, 148, 255], \"7333\": [0, 51, 0, 255], \"7334\": [0, 51, 0, 255], \"7335\": [0, 51, 0, 255], \"7336\": [0, 51, 0, 255], \"7337\": [0, 51, 0, 255], \"7338\": [180, 255, 148, 255], \"7339\": [0, 51, 0, 255], \"7340\": [180, 255, 148, 255], \"7342\": [180, 255, 148, 255], \"7343\": [0, 51, 0, 255], \"7346\": [180, 255, 148, 255], \"7347\": [180, 255, 148, 255], \"7348\": [180, 255, 148, 255], \"7349\": [180, 255, 148, 255], \"7350\": [0, 51, 0, 255], \"7351\": [180, 255, 148, 255], \"7352\": [180, 255, 148, 255], \"7353\": [0, 51, 0, 255], \"7355\": [180, 255, 148, 255], \"7356\": [180, 255, 148, 255], \"7357\": [0, 51, 0, 255], \"7358\": [180, 255, 148, 255], \"7360\": [0, 51, 0, 255], \"7361\": [0, 51, 0, 255], \"7362\": [0, 51, 0, 255], \"7363\": [180, 255, 148, 255], \"7364\": [180, 255, 148, 255], \"7366\": [0, 51, 0, 255], \"7367\": [0, 51, 0, 255], \"7368\": [0, 51, 0, 255], \"7369\": [0, 51, 0, 255], \"7370\": [0, 51, 0, 255], \"7371\": [0, 51, 0, 255], \"7372\": [0, 51, 0, 255], \"7375\": [180, 255, 148, 255], \"7376\": [0, 51, 0, 255], \"7377\": [180, 255, 148, 255], \"7378\": [0, 51, 0, 255], \"7379\": [0, 51, 0, 255], \"7380\": [0, 51, 0, 255], \"7381\": [180, 255, 148, 255], \"7382\": [0, 51, 0, 255], \"7383\": [0, 51, 0, 255], \"7384\": [0, 51, 0, 255], \"7385\": [180, 255, 148, 255], \"7387\": [130, 101, 72, 255], \"7388\": [130, 101, 72, 255], \"7390\": [130, 101, 72, 255], \"7391\": [130, 101, 72, 255], \"7392\": [130, 101, 72, 255], \"7393\": [130, 101, 72, 255], \"7394\": [55, 146, 173, 255], \"7395\": [55, 146, 173, 255], \"7396\": [130, 101, 72, 255], \"7397\": [55, 146, 173, 255], \"7398\": [55, 146, 173, 255], \"7400\": [55, 146, 173, 255], \"7401\": [55, 146, 173, 255], \"7403\": [55, 146, 173, 255], \"7405\": [55, 146, 173, 255], \"7406\": [0, 51, 0, 255], \"7407\": [55, 146, 173, 255], \"7408\": [55, 146, 173, 255], \"7409\": [199, 176, 129, 255], \"7410\": [255, 226, 130, 255], \"7411\": [255, 226, 130, 255], \"7412\": [255, 226, 130, 255], \"7413\": [255, 226, 130, 255], \"7414\": [255, 226, 130, 255], \"7415\": [255, 226, 130, 255], \"7416\": [255, 226, 130, 255], \"7417\": [255, 226, 130, 255], \"7418\": [255, 226, 130, 255], \"7419\": [255, 226, 130, 255], \"7420\": [255, 226, 130, 255], \"7421\": [255, 226, 130, 255], \"7422\": [255, 226, 130, 255], \"7423\": [255, 226, 130, 255], \"7424\": [255, 226, 130, 255], \"7425\": [255, 226, 130, 255], \"7426\": [255, 226, 130, 255], \"7428\": [255, 226, 130, 255], \"7429\": [255, 226, 130, 255], \"7430\": [255, 226, 130, 255], \"7431\": [255, 226, 130, 255], \"7434\": [255, 226, 130, 255], \"7435\": [255, 226, 130, 255], \"7436\": [255, 226, 130, 255], \"7437\": [255, 226, 130, 255], \"7438\": [255, 226, 130, 255], \"7439\": [255, 226, 130, 255], \"7441\": [255, 226, 130, 255], \"7442\": [255, 226, 130, 255], \"7444\": [180, 255, 148, 255], \"7445\": [180, 255, 148, 255], \"7446\": [180, 255, 148, 255], \"7447\": [180, 255, 148, 255], \"7448\": [0, 51, 0, 255], \"7449\": [180, 255, 148, 255], \"7450\": [180, 255, 148, 255], \"7451\": [180, 255, 148, 255], \"7452\": [130, 101, 72, 255], \"7453\": [180, 255, 148, 255], \"7454\": [180, 255, 148, 255], \"7455\": [180, 255, 148, 255], \"7456\": [180, 255, 148, 255], \"7457\": [180, 255, 148, 255], \"7458\": [180, 255, 148, 255], \"7459\": [180, 255, 148, 255], \"7460\": [180, 255, 148, 255], \"7461\": [180, 255, 148, 255], \"7462\": [180, 255, 148, 255], \"7463\": [0, 51, 0, 255], \"7466\": [180, 255, 148, 255], \"7467\": [180, 255, 148, 255], \"7468\": [180, 255, 148, 255], \"7469\": [180, 255, 148, 255], \"7471\": [0, 51, 0, 255], \"7472\": [0, 51, 0, 255], \"7473\": [180, 255, 148, 255], \"7474\": [180, 255, 148, 255], \"7475\": [180, 255, 148, 255], \"7476\": [180, 255, 148, 255], \"7481\": [130, 101, 72, 255], \"7482\": [255, 226, 130, 255], \"7483\": [255, 226, 130, 255], \"7484\": [255, 226, 130, 255], \"7485\": [255, 226, 130, 255], \"7486\": [255, 226, 130, 255], \"7487\": [255, 226, 130, 255], \"7488\": [255, 226, 130, 255], \"7489\": [255, 226, 130, 255], \"7500\": [100, 100, 100, 255], \"7501\": [180, 255, 148, 255], \"7502\": [0, 51, 0, 255], \"7503\": [255, 226, 130, 255], \"7504\": [255, 226, 130, 255], \"7505\": [180, 255, 148, 255], \"7506\": [180, 255, 148, 255], \"7507\": [180, 255, 148, 255], \"7509\": [0, 51, 0, 255], \"7510\": [180, 255, 148, 255], \"7511\": [0, 51, 0, 255], \"7512\": [0, 51, 0, 255], \"7513\": [180, 255, 148, 255], \"7514\": [255, 226, 130, 255], \"7515\": [255, 226, 130, 255], \"7516\": [255, 226, 130, 255], \"7517\": [180, 255, 148, 255], \"7518\": [0, 51, 0, 255], \"7519\": [180, 255, 148, 255], \"7522\": [130, 101, 72, 255], \"7523\": [0, 51, 0, 255], \"7524\": [0, 51, 0, 255], \"7525\": [0, 51, 0, 255], \"7527\": [0, 51, 0, 255], \"7545\": [180, 255, 148, 255], \"7546\": [0, 51, 0, 255], \"7547\": [180, 255, 148, 255], \"7548\": [180, 255, 148, 255], \"7556\": [180, 255, 148, 255], \"7557\": [180, 255, 148, 255], \"7560\": [130, 101, 72, 255], \"7561\": [255, 226, 130, 255], \"7562\": [180, 255, 148, 255], \"7563\": [130, 101, 72, 255], \"7564\": [255, 226, 130, 255], \"7565\": [130, 101, 72, 255], \"7566\": [255, 226, 130, 255], \"7567\": [255, 226, 130, 255], \"7571\": [180, 255, 148, 255], \"7573\": [180, 255, 148, 255], \"7578\": [255, 226, 130, 255], \"7582\": [0, 51, 0, 255], \"7583\": [0, 51, 0, 255], \"7584\": [0, 51, 0, 255], \"7585\": [0, 51, 0, 255], \"7586\": [0, 51, 0, 255], \"7587\": [0, 51, 0, 255], \"7588\": [180, 255, 148, 255], \"7589\": [180, 255, 148, 255], \"7590\": [180, 255, 148, 255], \"7591\": [180, 255, 148, 255], \"7662\": [255, 226, 130, 255], \"7663\": [130, 101, 72, 255], \"7668\": [255, 226, 130, 255], \"7733\": [100, 100, 100, 255], \"7734\": [100, 100, 100, 255], \"7735\": [0, 0, 255, 255], \"7861\": [180, 255, 148, 255], \"7867\": [180, 255, 148, 255], \"7900\": [180, 255, 148, 255], \"7901\": [180, 255, 148, 255], \"7902\": [180, 255, 148, 255], \"7903\": [255, 226, 130, 255], \"7904\": [130, 101, 72, 255], \"7905\": [180, 255, 148, 255], \"7906\": [180, 255, 148, 255], \"7907\": [180, 255, 148, 255], \"7908\": [255, 226, 130, 255], \"7909\": [130, 101, 72, 255], \"7910\": [180, 255, 148, 255], \"7911\": [180, 255, 148, 255], \"7912\": [180, 255, 148, 255], \"7913\": [255, 226, 130, 255], \"7914\": [130, 101, 72, 255], \"7915\": [180, 255, 148, 255], \"7916\": [180, 255, 148, 255], \"7917\": [180, 255, 148, 255], \"7918\": [255, 226, 130, 255], \"7919\": [130, 101, 72, 255], \"7920\": [180, 255, 148, 255], \"7921\": [180, 255, 148, 255], \"7922\": [180, 255, 148, 255], \"7923\": [130, 101, 72, 255], \"7924\": [255, 226, 130, 255], \"7925\": [180, 255, 148, 255], \"7926\": [180, 255, 148, 255], \"7927\": [180, 255, 148, 255], \"7928\": [130, 101, 72, 255], \"7929\": [255, 226, 130, 255], \"7930\": [180, 255, 148, 255], \"7931\": [180, 255, 148, 255], \"7932\": [180, 255, 148, 255], \"7933\": [130, 101, 72, 255], \"7934\": [255, 226, 130, 255], \"7935\": [180, 255, 148, 255], \"7936\": [180, 255, 148, 255], \"7937\": [180, 255, 148, 255], \"7938\": [130, 101, 72, 255], \"7939\": [255, 226, 130, 255], \"7940\": [180, 255, 148, 255], \"7941\": [180, 255, 148, 255], \"7942\": [180, 255, 148, 255], \"7943\": [130, 101, 72, 255], \"7944\": [255, 226, 130, 255], \"7945\": [180, 255, 148, 255], \"7946\": [180, 255, 148, 255], \"7947\": [180, 255, 148, 255], \"7948\": [130, 101, 72, 255], \"7949\": [255, 226, 130, 255], \"7950\": [180, 255, 148, 255], \"7951\": [180, 255, 148, 255], \"7952\": [180, 255, 148, 255], \"7953\": [130, 101, 72, 255], \"7954\": [255, 226, 130, 255], \"7955\": [180, 255, 148, 255], \"7956\": [180, 255, 148, 255], \"7957\": [180, 255, 148, 255], \"7958\": [130, 101, 72, 255], \"7959\": [255, 226, 130, 255], \"7960\": [180, 255, 148, 255], \"7961\": [130, 101, 72, 255], \"7962\": [130, 101, 72, 255], \"7963\": [255, 226, 130, 255], \"7964\": [255, 226, 130, 255], \"7965\": [255, 226, 130, 255], \"7966\": [255, 226, 130, 255], \"7967\": [255, 226, 130, 255], \"7968\": [255, 226, 130, 255], \"7970\": [180, 255, 148, 255], \"7971\": [130, 101, 72, 255], \"7972\": [130, 101, 72, 255], \"7973\": [255, 226, 130, 255], \"7974\": [255, 226, 130, 255], \"7975\": [255, 226, 130, 255], \"7976\": [255, 226, 130, 255], \"7977\": [255, 226, 130, 255], \"7978\": [255, 226, 130, 255], \"7979\": [255, 226, 130, 255], \"7980\": [180, 255, 148, 255], \"7981\": [130, 101, 72, 255], \"7982\": [130, 101, 72, 255], \"7983\": [255, 226, 130, 255], \"7984\": [255, 226, 130, 255], \"7985\": [255, 226, 130, 255], \"7986\": [255, 226, 130, 255], \"7987\": [255, 226, 130, 255], \"7988\": [255, 226, 130, 255], \"7989\": [255, 226, 130, 255], \"7990\": [180, 255, 148, 255], \"7991\": [130, 101, 72, 255], \"7992\": [130, 101, 72, 255], \"7993\": [255, 226, 130, 255], \"7994\": [255, 226, 130, 255], \"7995\": [255, 226, 130, 255], 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[100, 100, 100, 255], \"9033\": [100, 100, 100, 255], \"9034\": [180, 255, 148, 255], \"9035\": [180, 255, 148, 255], \"9041\": [180, 255, 148, 255], \"9042\": [180, 255, 148, 255], \"9044\": [255, 226, 130, 255], \"9045\": [255, 226, 130, 255], \"9047\": [255, 226, 130, 255], \"9050\": [180, 255, 148, 255], \"9051\": [180, 255, 148, 255], \"9055\": [130, 101, 72, 255], \"9056\": [130, 101, 72, 255], \"9057\": [255, 226, 130, 255], \"9059\": [180, 255, 148, 255], \"9060\": [180, 255, 148, 255], \"9061\": [100, 100, 100, 255], \"9062\": [100, 100, 100, 255], \"9063\": [255, 226, 130, 255], \"9064\": [100, 100, 100, 255], \"9065\": [100, 100, 100, 255], \"9066\": [180, 255, 148, 255], \"9068\": [180, 255, 148, 255], \"9069\": [180, 255, 148, 255], \"9071\": [180, 255, 148, 255], \"9073\": [100, 100, 100, 255], \"9075\": [180, 255, 148, 255], \"9077\": [255, 226, 130, 255], \"9080\": [180, 255, 148, 255], \"9082\": [180, 255, 148, 255], \"9083\": [180, 255, 148, 255], \"9085\": [180, 255, 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130, 255], \"9826\": [255, 226, 130, 255], \"9827\": [130, 101, 72, 255], \"9828\": [255, 226, 130, 255], \"9829\": [255, 226, 130, 255], \"9993\": [255, 226, 130, 255], \"9994\": [255, 226, 130, 255]}"
}

Questions

1. Is the fact that my colormap has 840 keys to it stressing out titiler somehow?
2. I noticed that in /rio_tiler/colormap.py my colormap has the correct keys (i.e. 9823 etc) but my data.max() and data.min() are 255 and 0 respectively. I'm not specifying rescale as a query param so I would. not expect it to do this.

[vincentsarago]

Is the fact that my colormap has 840 keys to it stressing out titiler somehow?

It shouldn't be a problem to titiler itself but it will result in a really long URL which might not be handled well by the client you're using.

Any reason not to put the colormap directly in the COG? You could also hardcode the colormap in your titiler application

I noticed that in /rio_tiler/colormap.py my colormap has the correct keys (i.e. 9823 etc) but my data.max() and data.min() are 255 and 0 respectively.

Can you be a bit more specific where you're seeing data.max() == 255 ?

[vincentsarago]

at this step it's expected that data has min/max values of 0 and 255 because that are the min/max values for the colormap (rgb) tuples.

Now going back at the initial post it seems to me that it could be due to resampling artefacts (either for reprojection or overview resampling). It would help to have direct access to the file.

You can DM directly at [email protected]

[MattReimer]

It would help to have direct access to the file.

Sure! It's not big and it's public information so I don't mind sharing:

cog.zip

• I included colormap.json in the zip file too which is the actual colormap I'm trying to pass
• Also the tile I'm looking at (also the ones attached above) is /cog/tiles/WebMercatorQuad/11/410/710.png

[MattReimer]

An update: It seems like the tiles look fine at zoom level 12 but it looks bad again at zoom level 11

Zoom level 12

Zoom level 11

Does this have something to do with the way the COG is produced?

[vincentsarago]

Does this have something to do with the way the COG is produced?

@MattReimer yes, that's what I was saying with 👇

Now going back at the initial post it seems to me that it could be due to resampling artefacts (either for reprojection or overview resampling). It would help to have direct access to the file.

if non nearest resampling was used or if the nodata was not well defined then the overviews can have values that are not part of your classes

[MattReimer]

Ok. Sorry for the circular discussion. I think I can take it from here. This has been a real learning experience. Thanks for your time.